A sexual act almost equivalent to the oral sex act "the
blowjob", except for the fact that the person performing the
fellatio make a sucking noise, such as a
vacuum cleaner would make. Sounds include: "Shhlck", "Slllllluuuuuuupp" , etc.
Fred: Yo man,
Daphne and I had the best sex last night!
Shaggy: Like, did she give you a blowjob man?
Fred: Dude, she gave me a freaking reverse vacuum cleaner!
Shaggy:
Zoinks! That's like, totally awesome man!