This is a synonym for the quadriceps femoris muscle on the lower limb.
This muscle is named after Luke McCalister, the present All Black whom has abnormally large thighs.
The sneaky little guy that gets me and my friends through the night. We pull it out the drawer and fill it with sticky icky. Its called Kevin McAllister due to its sneakyness and suprising qualities.
Guy 1: Bro I drank too much last night, I'm hungover as shit.
Guy 2: Brah just grab the Kevin McAllister out the damn drawer, we gonna gets a little faded.
When a goon dick has an ass kicking coming to him and refuses to take it like a man and runs away: Refering to the runningback for the New Orleans Saints Deuce Mcallister
Stewart:Why wont Jared quit being a deush mcallister and just take the ass stomping he deserves
Steve:I dont Know but its gonna be 10 times worse now