a mixture of being funny and runny (as in having the runs). both a happy and uncomfortable feeling....happens to the best of us
OMG! I am so frunny right now, hahaha....brb, I have to go to the bathroom...
by frunnyforlife January 25, 2011
simply a funny, runny poo
"oh man, i had an amazing frunny this morning!"
by chuggzy April 28, 2008