|1.||reverse vacuum cleaner|
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!