The disposable toilet-seat tissue which prevents your ass from touching the toilet seat upon defecation.
"damn, that shit is rancid! I need an assgasket!"
by Dylan March 13, 2004
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A peice of plastic or Toilet paper placed between your ass and a public or, very dirty toilet seat. Therefore when taking a shit you will make no contact with the contaminated crapper. Some establishments provide assgaskets for their guests.
Exscuse me waiter, I think I sharted or, I need to take a shit. Do you provide assgaskets in your restrooms?
by Kenny H September 28, 2006
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