Other definitions include the use of the word describing things and/or situations equally foul or smelly.
Ass-cheese can be used in replacement of similar words that describe things and conditions that are unfavorable.
'This sucks worse than the time I was drunk and licked your ass-cheese!!'
'This burger tastes like ass-cheese!!'
Ass cheese is a double-edge sword and uses its survival mechanisms to fend off removal:
1) It causes intense itching, however when you scratch that area, the ass cheese gets wedged underneath your fingernails, causing your hands to smell like a dirty asshole (which eventually envelopes your whole body, making you a smell like a walking dingle-berry). Because of this, people tend to abstain from itching the ass cheese and just letting it be.
2) Latches onto asshole hairs, escaping the reach of toilet paper and fingers (also, see doody hairs).
The pungent odor consumed him and he passed out on the spot...
When he woke up the next day, he had a dirty sanchez - ASS CHEESE STYLE! He vomited over and over until he passed out again.