Belgium Surprise

When you insert your flacid (limp) penis into a females vagina and then get an erection and proceed with intercourse.

Girl: "What the fuck are you doing! Ughhh get awa... Oh oh baby that's nice."

JustinBryant: "Oh yea baby, you just experienced a Belgium surprise."

by Jbizz34 September 22, 2009

Belgium surprise

When randomly, in the act of intercourse, a man switches his dong out for a Belgium sausage.

Marshall gave his girl the night of her life when he gave her a Belgium surprise.

by gmoneyslaps April 23, 2023