Favor (2013)

A Friend Helps You Move. A Good Friend Helps You Move a Body.

Kip's perfect life is put in jeopardy when the waitress with whom he's having a casual fling is accidentally killed in their motel room. Desperate, he turns to childhood friend and loser, Marvin, to help get rid of the body. Marvin agrees which begins the unraveling of their friendship and ultimately leads both to murderous acts they never thought themselves capable of.