Top definition
Greasefarting is the act of farting when the anal cavity is experiencing conditions such as "swamp ass." Generally, it results from a lack of cleanliness of the top of the ass crack down to the gooch(a.k.a. skin-bridge).
After a long day of hot, sweaty work and three bowls of chili, John unleashed his greasefarting ass upon the unsuspecting welfare mothers standing in line for government cheese.
by John Pappelbahn March 30, 2009
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