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The fluids etc... exchanged between lovers, or the chemicals released by lovemaking that change their mood fostering attachment. Notably semen and oxytocin.

From: Cootie - infectious agent of the opposite sex (school yard) and ceutical - medicinal preparation
Holy crackers, I thought I was immune to love, but his cootieceuticals overpowered me!
by Freshette Colloquial June 02, 2011
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