Top Definition
To Dyson is the name given to the act of sucking up ones recently ejaculated semen through the eye of the penis. Most commonly caused by the victim being interrupted during masturbation during climax. This shock leads to the testicles expanding slightly internally, thus creating a vacuum inside the testes which therefore sucks the semen back into the testes. If done on a regular basis this can cause severe aching of the testes and may cause one or both of them to pop violently and randomly, normally when sexually aroused.
"Hey son how was your day?"
"Shit dad go away, knock next time! You made me Dyson!!"
"Oh sorry son, my bad"
by RVALDEN May 11, 2010
Well documented to be the most faithful and fertile family in all of the U.K. where 80% of those who bear the surname are related to each other.
George Dyson, English composer
Frank Watson Dyson, Astronomer Royal
James Dyson, inventor of the Dual Cyclone vacuum cleaner
Hugo Dyson, Inkling
George Dyson, science historian
by Dysdysbaby April 17, 2007
-A brand of vacuum cleaner
-Somebody who sucks/a loser (from "You suck like a Dyson, bitch!")
Man, you're such a Dyson...
by Vex May 11, 2005
A person who likes to go Bagless, i.e never uses condoms, esp in casual relationships
Butts is a real Dyson, he never Bags Up
by nezzy_22 November 13, 2008
A lad cunt, with a mighty long dick, fully sick nickname like dragon. And is extremely cool, and rakes in all the pussy!
That guy over there is a Dyson
by DB2024 April 12, 2015
A situation that sucks so much, it never loses suction.
Work is a dyson - "work really sucks".

What a dyson - "a person who is really rotten".
by acland March 18, 2009
The greatest invention in the world that allows you to clean up in the after partys at 2 o'clock the next morning when u wake up after getting wasted and ur parents are on the way home. (A vaccuum)
Shit that Dyson saved my ass nigga
by Lyle Brayden April 09, 2005
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