The watery substance in a settled catsup/ketchup bottle. Similar to pre-cum, hence pre-chup.
Damn, I have pre-chup on my hot dog again. Next time I have to shake the catsup bottle.
by Scott Root October 26, 2006
9 Words related to pre-chup
The runny tomato water that comes from a ketchup bottle if one does not thoroughly shake it before use. Sibling of musquirt. Derived from precum.
Put it in a cup on the side just in case. I don't want any prechup on my burger.
by roundthewheel December 28, 2008

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