A mix of the phrase on god and I swear.

use on swear when your homies say some real g shit and you can’t decide whether it’s on god or I swear !!!!! On swear !!!!!
Aleiza: “That nigga tit do be thick asf

Ashley : “On swear!!!”
by Pussy_destroyerXX April 7, 2019
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What most parents give way too much of a fuck about even though they do it themselves.
*example of swearing*
Me: "Fuck!"
dad: "Watch your mouth, I don't want you using that word in my house.
Me: "Dad you say it too, don't act like you don't."
dad: "I'd never say that word" (drops mug and breaks it) "Fuck!"
by Dubiks December 10, 2018
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Commonly used when agreeing or when pleased with something
Person 1: you are dumbugly
Person2:no I’m not
Person3:swear you are
by YUN Thomas March 14, 2018
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What sailors do.
He's swearing like a sailor.
by Jsummers33 December 19, 2016
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Something adults say all the time, but all hell breaks loose when kids do it. An example of acceptable hypocrisy.
Adult: Hey guys, this is fucking good!
Kid: Yeah I love it, this is the shit!

Adult: Language kid!!!
Kid: But you guys swear all the time. For fucks sake Swearing is not the end of the world!
by Chalko3 January 9, 2021
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When someone doesn't believe what you just said. Sort of like "No way!"
Math teacher: "You can use any notes you take in this class on the test."
Student: "Swear!"
by daphoneplayer September 9, 2018
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