the licking or sucking of another person's asshole
Josh just gave Sydney suckbutt!
One who tends to kiss ass for job advancement
Billy Gene played suck butt with JC to get a few days off from work.
When an article of your clothing gets stuck between your butt cheeks. Separate from a wegdie because the clothing is not going up your butt, it just gets smashed a little between your cheeks. Common with dresses and right when you stand up after sitting for a while.
When you first get out of the water and your bikini bottoms ride up your butt is an example of suck butt