I have a couple:

Gimme an E!
(E!)
Gimme an x!
(X!)
Gimme an L!
(L!)
Gimme an A!
(A!)
Gimme an X!
(X)
Whats that spell?
Exlax!
What's it make you do?
GO GO GO GO GO!



U-G-L-Y You ain't got no alabi, you ugly, yeah yeah, you ugly, yeah yeah!
M-A-M-M-A You know how you got that way yo momma, yeah yeah, yo momma, yeah yeah!
D-A-D-D-Y You don't even know this guy yo daddy, yeah yeah, yo daddy, yeah yeah!

well my old team was nwac and our cheer was "we will n and wac u wac u all the way cuz there is winning to be done and we r going to win today!" we would do it 3x and get louder and louder. idk if this will help u but it could inspire u!!

team leader- ei ei ei eio

all- ei ei ei eio

team leader- come your team name lets go

all- come on team name lets go

team leader- oh oh ohoh

all- oh oh ohoh


then you repeat that 1 more time

our school mascot are PIRATES, so our swim chears are kind of fun.

1. google google google, wiki wiki wiki, PHHS.EDU, YAHOO!
2. P-P-P-I-R-A-A-T-E-S, P-I-R-A-T-E-S, GO PIRATES!
3. (leader) Pirates on three. PIRATES on THREE!! (everyone) ONE TWO THREE! PIRATES!
4. Go ahead, WALK THE PLANK! We know we'll survive. The only question is WILL YOU?

How about:

We're one, not two, not three, not four
We're gonna win, not lose, not tie the score
We're gonna beat'em, bust'em, that's the custom.
Gooooo [Your team]!

My swim team does a few fun ones:

(gradualling getting louder, after the last one (really loud) start cheering)
G-O G-O GO GO (name of team)
G-O G-O GO GO (name of team)
G-O G-O GO GO (name of team)
G-O G-O GO GO (name of team)
G-O G-O GO GO (name of team)

Tony Tiger thinks we're great, cuz we eat our frosted flakes.

(small group Ladi Daaaaaaaaaaaaaaaa.... Ladi Daaaaaaaaaaaaaaaaaaaa...
(everyone else Our team is the best! The Best of all the rest
Ladi Daaaaaaaaaaaaaaaa.... Ladi Da, Ladi Da, Ladi Da-Da-Da!
Our team is the best! Ladi Da, Ladi Da, Ladi Da-Da-Da!

Betty Crocker thinks we're great, cuz we eat our chocolate cake.

(small group Ladi Daaaaaaaaaaaaaaaa.... Ladi Daaaaaaaaaaaaaaaaaaaa...
(everyone else Our team is the best! The Best of all the rest
Ladi Daaaaaaaaaaaaaaaa.... Ladi Da, Ladi Da, Ladi Da-Da-Da!
Our team is the best! Ladi Da, Ladi Da, Ladi Da-Da-Da!

Freddy, Velma, Shaggy too, wish us all a yabba dabba doo.

(small group Ladi Daaaaaaaaaaaaaaaa.... Ladi Daaaaaaaaaaaaaaaaaaaa...
(everyone else Our team is the best! The Best of all the rest
Ladi Daaaaaaaaaaaaaaaa.... Ladi Da, Ladi Da, Ladi Da-Da-Da!
Our team is the best! Ladi Da, Ladi Da, Ladi Da-Da-Da!


S-U-P-E-R SUPER SUPER thats what we are. We're superman now can't you see we're number one not two not three!
(repeat 4 more times getting louder and louder and then cheering after the last one)

for the beginning:

Florida Oranges Texas Cactus We think your team needs a little practice throw 'em in the pool pull out the plug watch your team go glug glug glug
or
(leader) the cookie monster says
(others repeat)
(leader) that *your team* is
(others repeat)
(leader) the great big cookies at the top of the jar
(others repeat)
(leader) the cookie monster says
(others repeat)
(leader) the itty bitty crumbs at the bottom of the jar
(others repeat)

and for the end:

bubble gum bubble gum chew chew chew we think *opposing team* is a mighty fine crew.
or
roller coaster roller coaster loopdy loop we think your teams a mighty fine group.

sorry for my last post i meant:

(leader) the cookie monster says
(others repeat)
(leader) that *your team* is
(others repeat)
(leader) the great big cookies at the top of the jar
(others repeat)
(leader) the cookie monster says
(others repeat)
(leader) that *opposing team* is
(others repeat)
(leader) the itty bitty crumbs at the bottom of the jar
(others repeat)

sorry and thanks!!!

Leader: We are the best
Kids: oh yeah
Leader: From east to west
Kids: oh yeah
Leader: We'll win in fly
Kids: oh yeah
Leader: and thats no lie
Kids: oh yeah
Leader: we'll win in back
Kids: oh yeah
Leader: and thats a fact
Kids: oh yeah
Leader: we'll win in breast
Kids: oh yeah
Leader: cause we're the best
Kids: oh yeah
Leader: we'll win in free
Kids: oh yeah
Leader: cause we're at sea
Kids: oh yeah

Here's one that is my favorite for our team:

Our team is what? Dynamite!
Our team is what? Dynamite!
Our team goes tick tick tick tick tick tick BOOM! Dynamite!
Your team is what? Dynamite!
Your team is what? Dynamite!
Your team goes tick tick tick tick tick tick PSYCH! Yeah, right!