The colloquial name of a Gaelic school chant used at Queen's University in Kingston, Ontario. The words go:

Oil Thigh na banrighinn, a'banrighinn gubraith!
Oil Thigh na banrighinn, a'banrighinn gubraith!
Oil Thigh na banrighinn, a'banrighinn gubraith!
Cha Gheil! Cha Gheil! Cha Gheil!

Phonetically, it goes like this:

Oil thigh nah ban riggen, nah ban riggen guh brath
(three times)
Kay-Ahh! Kay-Ahh! Kay-Ahh!

The process of "doing an oil thigh" also involves a strange dance, and usually, alcohol.