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1.
Precoital occurance when a woman is sexually aroused. Her bearded clam/vagina seeps sexual lubricant, producing lady pre-cum. Often confused with snail tracks. A female version of a hard-on.
Lady 'The thought of that dump truck incident gave me a slop-on'

Charlotte said 'the thought of being touched again after so long, gave me a slop-on'
by Alison Sharkey and Lee Clark November 03, 2008