Stands for ball stuck
to leg, or balls stuck
to leg. This
condition commonly occurs in humid climates when
underwear, such as boxer shorts.When
the air is very humid and the scrotum's sweat glands are active, muculent fluids will sometimes cause the scrotum to collate itself to the leg or inner thigh.
Man, I really need to get out of this class and have
a shower. I have
some serious BSTL going on down here.