the other woman; also known as the mistress; a female that is neither a male's wife or girlfriend who has relations with the male while he is in another relationship
Kimmy: Look at Tina and Josh...are they going out?
Sally: No Kimmy! Josh is dating Laura. Tina is just his sidechick.
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A sidechick is a women that you have a separate relationship with
Wife: WHO THE FUCK IS THAT?!
Husband: She's my sidechick
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a side chick is a person with another person while that person is in a realationship
a man have his wife and he as another girl that is not his wife nor his girlfriend so that girl is his sidechick
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A position allocated to a girl which is neither a wifey or a girlfriend but a side dish like nandos rice
"Hey, look at those sidechicks Amy, cheyan tattendaa"
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sidechick is known as the mistress; a female that is neither a male's wife or girlfriend who has relations with the male while he is in another relationship
liv is not his girlfriend itβs his sidechick.
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The person you are cheating on your boyfriend( or girlfriend) on
Oh no! My wife found out about my sidechick
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Girls you have sex with on and off whilst you're looking for the one you want to go out with.
Georgia: Duncan and Siobhan slept together again last night. Do you think they're gonna go out?
Rafe: Nah, Duncan fancies Jodi, not her. Siobhan's just his sidechick.
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