Ass trufflle occurs when two straight males get bored and proceed to shove eachothers' noses in eachothers' asses pretending to look for the elusive ass truffle....not to be mistaken for the homosexual version called tossing the salad.
Igaloo brother is defined as two men that fuck the same girl in the ass, therefore having to accept certain concessions when each other asks. Not to be confused with eskimo borthers which is sex in the pussy.
1st guy: Yo man i fucked Charlene in the ass last night
2nd guy: I fucked her last Tuesday bro
1st guy: igaloo brother
2nd guy: buy me a drink