Larry and Susan had a one night stand. They created a child. Hence, Larry and Susan were bastarding.
by Cleinth July 23, 2012
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Neo starting a game of league without me
Neo, you rat bastard, you started a game without me.
by neoscutie December 25, 2020
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A despicable person, usually pakistani origins
Do you want to hang out with Umer?
Nah man, he is such a rat bastard
by CoolGamer123 September 22, 2021
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1. A particularly nasty piece of work. A real jackass. Someone you’d rather beat with a brick until they stop twitching then interact with. Not a nice chap by any means.

2. A jocular way to compliment your friend. Sly, sneaky, clever. Works with Magnificent Bastard as well
Option 1:
That rat-bastard stole my car!

Option 2:
You rat-bastard! How are you?
by Octagonal Revolver April 2, 2022
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Someone who knowingly, willingly, and deliberately cutting you off while you are driving.
“That Rat Bastard cut me off for no reason!”
by Xemnes_24 June 1, 2023
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You have to be called Finn to use this insult it is calling someone by the name of a rat and a bastard in ☝️
Oh Finn said your a rat bastard to jerome
by Finn turner robertson June 8, 2022
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A scale (1 to 10) that describes the likelihood of a vicious old person calling someone a bastard for little or no reason.
I asked the neighbor to keep her dog off my lawn, and she called me a bastard. Wow! That's crazy -- she must have a bastard factor of at least 7.
by gjjcorbett April 4, 2022
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