Top definition
Runner's whip occurs when you are running but your dick be too long so it keeps whipping back and forth until you get bruises on your inner thighs.
Wife: Babe, what happened to your legs?
Me: Oh these bruises?
Wife: Yea
Me: Went for a run last night...
Wife: Oh no, did someone hit you?
Me: Nah bitch, it's runner's whip from my fat long dick!
by this_is_true February 13, 2018
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