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1.
Oral sex from a person with no teeth.

Having sex with a woman old enough to be your grandmother.
"She may be old, but I only had to buy her 2 beers for a gumblow."

"Man, I musta been drunk last night...I think I scored some gumblow."
by Buttnurse June 03, 2009

Words related to gumblow

blow gums head senior citizen sex with elderly