Someone sitting on anything with one buttcheek.
At the diner, i noticed a hafass on the stool next to me.
by Lameck July 20, 2007
Get the hafass mug.
When an ass is so big, half of it hangs off the seat.
Don't sit your hafass on that fisher price chair.

by theheltons October 29, 2007
Get the hafass mug.