And though it's not the full on assault hoped for and it's devoid of any sheep references:

A Baylor Bear, a Longhorn and an Aggie walk into a men's room. When the Bear is finished, he goes to the sink, uses copious amounts of water and soap, then enough paper towels for three people. He turns and ...

How many Aggies does it take to screw in a light bulb?

Only one, but he gets 3 hours credit.