smells of ass 

When something (i.e. a room, clothes, your mom) smells exceptionally bad, as definined by the usual smells of a persons rectum.

God, my armpits smell of ass!

smells of ass by 7mondays May 3, 2004

Smells like the inside of an ass hole 

The worse smell imaginable because in an ass hole there is a lot of shit and fart concentrated and confined to a very small place.

What is that smell? It smells like the inside of an ass hole.

Smells like the inside of an ass hole by The Fury 13 November 21, 2010

smells like the ass of an ass 

used to explain a horrible smell surpassing the smell of Dane cook's ass

dude:bro macy threw up!

bro:i know dude it smells like the ass of an ass

smells like the ass of an ass by ohshitt99 January 17, 2011