Definitions by Thunderbox69

Jizzrun 

After the physical act of copulation, if the male ejaculate is allowed to spill inside the female cervix, she will most likely run or walk (at a brisk pace) to the lavatory to allow said ejaculate to drain from her nethers.

Last night my missus went for a Jizzrun but didn't make it, so I made her clean the floor...

With her undies.

Jizzrun by Thunderbox69 September 5, 2013