frog bottom 

When a diseased female decides she is too dirty for human sexual contact and goes into a pond to find solace among fish hoping a small fish or guppie or will lodge into her vaginal area for one last pleasurful moment she so desperately needs.

This filthy hooker on the street decided to leave town for a frog bottom in hopes for one last sexual adventure.

frog bottom by teenick April 3, 2015

hit frog bottom 

Used to describe moments where the vagina has acquired a less than desirable smell. Common instances would be while spending extended periods of time sitting at a desk with tight dress pants on. May also be known as "crotch rot".

"whats up girl..how was work?"
"I tell ya, I hit frog bottom sitting in this chair all day. I don't know what is going on with my junk!"

hit frog bottom by mmrr530 June 15, 2009