girl: hey there wanna go to third base?  boy: yea sure *unzips pants*  girl: *looks at [dick]* oh, sorry, i didn't know that you're a kelven
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"girl: hey there wanna go to third base?  boy: yea sure *unzips pants*  girl: *looks at [dick]* oh, sorry, i didn't know that you're a kelven" What is the definition of "kelven"?