When the seat of your jeans is baggy so it makes you look like you have a saggy diaper. Can be fixed by buying a better fitting pair of pants that hugs your butt.
Can be abbreviated as SBS.
-Dude, you see that chick?
-Yeah man, either she needs to hit the gym or those jeans are just giving her Saggy Butt Syndrome!
"My college professor gave us a quiz two days before the final on brand new material, and then sent us an e-mail apologizing for it but refusing to change the grades. He is such a soggy buttcheek!"
When you get a blender, you cum all in it and then you shit in it and then mix it up and stick your dick in it so it sticks to your dick. Some girls like it this way!