When you put someones nose in between the cheeks of your ass and fart, usually when they are asleep or passed out at a party.
Also Referred to as a Fart Hammer.
"Tim gave Billy a nosefull last night when we Billy fell asleep at Tims house."
by Chris November 19, 2004
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When you place someones nose between your ass cheeks and let a big smelly fart out, usually done when the victim is asleep, passed out, or held down.

Also reffered to as a 'Fart Hammer'
"Tim gave Billy a nosefull last night when Billy passed out at Tim's house.
by Chris November 19, 2004
Get the a nosefull mug.