asspucker
Spastic contractions of your sphincter muscle after taking a not so satisying shit. Also common after fits of Cryarrhea
Tim's shit was cut short by the doorbell giving him about 5 minutes of uncomfortable asspucker.
Asspuck
the leading part of a large turd that is almost too big to exit your poo hole.
i took a dump today that hurt so bad till i got past the asspuck.