Top definition
The sudden response a person exhibits when tasting someone's spunk.
Duder 1: "Ha Ha got this funny story to tell you. So my girl was giving me head the other day and once I spurt in her mouth she pulled away, spit it out and said 'No BUENO!!!'."

Duder 2: "Ha Ha Ha nukka that's one bad spermy reaction. You better drink some pineapple juice with breakfast, lunch and dinner. Get your shit in check."
by westfalia December 19, 2010
Get the mug
Get a spermy reaction mug for your cat Sarah.