Getting back with the same girl multiple times (2+) because you can't make up your mind and say "no" because you have no spine and won't listen to your friends when they tell you it's a bad idea. Also known as the "Lucas" or the "Chilean Chastity Belt"
Andrè: "Yo ma nigga, what's up with Luke?"

Josh:"Nigga, he pulling a Kelsy up in this shit."

Dereck: "You mean a Chilean chastity belt?"

Isie: "HA GAY!"
by LucasDontDoThis March 17, 2014
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Pulling a Kelsie can be defined as being a complete uber bitch to someone, then just saying something cute and naive to try and get out of it.
Kelsie: "wtf you're such a slut f*#k you!"
Layla: "excuse me?"
Kelsie: "What, did you fart?"
Layla: "..grow up"
Kelsie: "I like apples and bananas!"
Layla: "Way to pull a Kelsie"
by lovinlife1994 January 16, 2010
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Shitting yourself a lot

Especially in theme parks
What is that curry sauce in my pants

Oh no I've pulled a kelsie
by Divawinter63866 October 23, 2013
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