Ugly Bastards are usually fat, middle age men with certain bodily features that most people find appalling.
This ugly bastard had his way with me, don’t tell anyone.
by Fuck-off-Regis April 14, 2018
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A recurring stereotype in hentai. It takes the form of an ugly, fat, unclean, or in general unpleasing male who will share an adult sceneario with the usually younger/vulnerable female lead, most likely in an abusive or degrading way that defines him as a bastard.
Artist: I'm gonna draw a super cute girl, with the big ol' titties, great eyes, pale skin, some blush and pouty lips fucked and going all ahgao by the fattest, smelliest Ugly Bastard
by Tequila Joseph March 13, 2018
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A character that is revolting that grope and finger fuck an anime school girl, a teacher or a house wife in doujin and hentai. A character that has a shiny bald head, an shaggy gut, one tooth in his mouth and usually smell like greasy modly garbage that force themselves onto anime girl victims.

Don't worry usually in these doujin and hentai the female character wind up adore being touched by a ugly bastard and becomes a mindless cumdumpster.

It's a very popular hentai tag.
An ugly bastard is a freak in hentai that forcefully plow an anime girl.
by Worldgonetococo June 11, 2022
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When a ugly midle aged man fucks your anime grill after 3 minutes of watching a potensially good anime that turned out to be a creepy huge age gap porno.
"Did you watch that recent hentai on hentaigasm? "

"Yeah dude, WTH! It had an ugly bastard in it. No thanks."
by weebjohnson December 16, 2017
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A man in a pornographic film that is so grotesquely overweight and ugly, sometimes significantly older than everyone else in the shoot, that it takes you out of the mood. It's enough to get you angry and question why they would cast him.

It gets more annoying when the other actors and actresses are looking their best with shredded abs or a waistline that's too small for a normal human, then you get a man that does not seem to be interested in the craft at all.
Guy1: I was watching a porn video yesterday and I was really getting into it.

Guy2: I don't know why you're telling me this, but I'll bite. What happened?

Guy1: A fucking fat ugly bastard showed up.

Guy2: OH NO! FUCK THAT GUY!
by theonewhoflops May 24, 2021
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A term used to insult someone when a simple one word insult such as bastard or twat will not suffice. The combination of words gives the user the ultimate verbal tool against any foe which rolls off the tongue and is enjoyable to utter at someone who has wronged you.
What did you do that for? You stupid ugly bastard faced fascist!
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