Top definition
The spermy plug that forms atop the penis shaft shortly after ejaculation. The next time one urinates the Splug flys like a champagne cork usually leading to some misguided urine.
I popped my splug and pissed all over the back of the toilet seat!
by darealjz June 01, 2010
Get the mug
Get a Splug mug for your Aunt Nathalie.