Pregnant; knocked up. Means literally that "one" kid is "on the way" (will be born soon, and will consume every moment of your spare time with its endless whining). Not a good thing if you have a girlfriend/wife who is not the mother of the baby.
"Just when I thought I said all I could say, my chick on the side says she's got one on the way..." -Usher, "Confessions (Part II)"

Jerry: "Shit man, did you hear? I got one on the way."
Pete: "Awesome. It's good you stopped shooting blanks and finally knocked your wife up."
Jerry: "No...that's the problem. My wife ain't the baby's mama...your 16-year-old daughter is."
Pete: "That dirty slut. I need to get her on the pill."
Jerry: "Word."
by Nick D July 19, 2004
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The type of person who will say 1 after every single kill, fakeduck, and hold oneways. When someone asks him a question, he retorts with something like "shut up nn I bet you don't even know what an LBY breaker is!"
No one asked you One-Waying Shit Talker
by Thanos' Large Purple COCK! November 25, 2019
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Doing something for yourself when you can easily do it for 2 people
I grabbed my gloves but not hers from the truck. She yelled don't be a one way same
by Shelboob April 21, 2021
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No one wears cats, but many people wear cows.
Barb's back was up against the wall since all her solutions to fixing her problems were failing. However, she grit her teeth and continued to problem solve, thinking to herself, "There is more than one way to skin a cow."
by Highly educated April 8, 2022
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When a person and another person simp for eachother but when one person causes a problem to the other they stop talking to them for a while but again both start simping shortly but can easily stop when a problem occurs
John why are you one way simping for Ava she keeps simping back but then leave than come back
by Howdoidothis September 2, 2020
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Bro come take a look at this one way dildo in the toilet. It's massive.
by Jeffrey fuckerson November 4, 2022
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Jocular and/or euphemistic way of referring to suicide.
Bob: Phil, have you seen Pete since he blew that interview?
Phil: No, but I heard he took it so hard he stormed off to the nearest bridge and went on his merry way.
Bob: LOL! Wish I could have been there to see it. Would have been the YouTube video of the century.

Pete killed himself. That is what it means to go on one's merry way.
by UDUser4820 April 11, 2018
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