Definitions by William Nye, The Science Guy

sloppy bob

When a girl is performing 2 simultaneous blowjobs (but one at a time in the mouth), gets both of them to the point of excitement, and allows both penises to ejactulate at the same time, then swallowing both loads together.

"Dude, he and his girl gave me a sloppy bob."

sloppy bob by William Nye, The Science Guy April 1, 2009