What you hear coming out of the mouths of various annoying individuals due to the combination of a deep vocal tone and sheer nonsense of his ramblings.
John: So what did Dave say to you, Jim? I heard a lot of wubbing.
Jim: Just that - wubwub the whole time.
The sound(s) the bass makes when it drops. Usually heard in electronic, techno, or dubstepmusic.
"Did you hear that new dubstep track, when the bass dropped everyone was like Wub, Wub, Wub..."
"Bro those Bass Sluts are about to cum from that wub wub wub!"