A little bump of whatever respective substance one may be doing. Usually the size of the body of a daddy long legs.
Hey man could i get a spider bump of that fire ass shit you just got.
by raginramborondo December 22, 2012
1. When two girls intersect legs and rub or 'bump' their lady parts in a sexual motion.

2. When two girls rub and grind their dripping wet pussies together.
Those girls are totally going home to spider bump.
by yumtown March 13, 2009

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