Tin ass

Do have been shagged by so many sheep that your behind begins to take on a dark shade of grey resembling tin.

Man: That tokoroan lad is a bit of a tin ass.

by Tui_Pure3 July 16, 2011

tin ass

Someone who achieves a feat of skill through nothing but luck

You landed that 3-pointer?! What a tin ass!

by tin ass September 10, 2003