The Phi Sig Phis on my campus all get on knee circled around someone standing up who leads them in a chant along the lines of There Once Was a Man from Nantucket. For the life of me I can't remember the words but it's a huge crowd pleaser.

The K-sigs pledges would sing "I'm a little Kappa Sig. Kappa Sig" to the tune of I'm a little tea pot. Then we would sing the pajama song:

I wear my silk pajamas in the summer when its hot
and I wear the flannel nighty in the winter when its not
But sometimes in the springtime and sometimes in the fall I slip
between the sheets with nothing on at all...
Don't you wish that you could be there
Don't you wish that you could be there
Don't you wish that you could be there
In the spring time and the fall...with nothing on at all

Then they would sing something funny about us being classy and another sorority being whores. Both our song and theirs are perfect for introduction visits because we don't like it when the songs are too dirty or insulting to our new members or theirs.

Then we would thank them by singing "something in my pocket":

There's something in my pocket, its not very big
its a custom made condom for every kappa-sig
Its not very big, but they can fill it up
those god-dam Kappa sigmas can never get it up!

The hand signals are cute too. When we sing "it's not very big" the second time we make a one inch sign and make it bigger as we sing "they can fill it up". Then when we sing the last line we stick our pinkies up and wiggle them like worms. To make the song a little longer we sing it in a round like row, row, row your boat.

We also sometimes sing a song called the freshman song...each class has its own verse and they more get more and more raunchy. If we have enough people each class sings their own verse, otherwise we all sing and the class waves theirs hands in the air:

We are the freshmen, freshmen are we
Happy go lucky bare-assed and free, god-dam-it
We are the freshmen, we lay the best men
We are the freshmen gir-r-rls

We are the sophomores, sophomore are we
Happy go lucky bare-assed and free, god-dam-it
We are the sophomores, we are the biggest whores
We are the sophomore gir-r-rls

Juniors...I can't remember the verse
Seniors...we suck the wieners
Fifth-years...we shouldn't be here
Alumni...we make the c*m fly