A Kroll is when you shake your shoulders rapidly when you walk in hopes of finding a gay mate, much like a mating dance
Dave walks down the halls doing the Kroll all day in hopes to find a lover to give a blumpkin
A Kroll is a type of scar that can occur generally in the buttucks of someone. Often caused by a sword gash.
After fighting in Vietnam Forrest Gump had a huge butt kroll.