Welch (v.) To Welch:
To sponge money off a person or organisation. (See A.)
To break a deal, contract or promise, verbal or written. (See B.)
A. "God damn. Simon just phoned... He's lost his job at the petrol pump... Probably means he's going to try and welch off me for the next few weeks..."

B. "I guess I promised to pay up... Don't want people to think I'm some kind of deal-welcher..."
by C. Kinsman March 11, 2008
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the sound made when 'pulling out' after sex.
god it was a proper welch when i withdrew
by Ben Crosskey December 4, 2007
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welch is ausom
by 1990 April 9, 2003
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When movie-goers show up to the theater 45+ minutes before the feature presentation. The welchers usually play the movie trivia that repeats every 2 minutes and hang their legs over the seats in front of them, so no one else can sit there.
Billy: Hey Rob, let's go welch tonight... call up Jake and see if he wants to come with us.
Rob: JAKE! Wanna go welching with Billy and I tonight?
by Tizz Mizzle June 5, 2007
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When the female is giving oral sex and the male forces her head on his genitals until she pukes
Dude I totally give my girl The Welch
by Thewelch April 9, 2016
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to frequent a bar, proceed to suck on the same cheap beer all night, while periodically going to the car to drink bottom barrel vodka from a water bottle.
"Do you wanna go to the bars tonight??"

"Yea, I'm gonna have to welch it tho, I have no money.."

by Sack Daddy August 16, 2008
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To bring down the mood of a party or social situation by being excessively awkward or depressing. Similar to being a Debbie Downer or Negative Nancy.
"This party was awesome until that douche came and welched it up."

"Dude, you're being such a welch."
by douchedecon August 9, 2008
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