Deriving from front-pony-tail, a frony-tail occurs when a man ties up the chunk of his hair that is usually hanging on his forehead or is slicked backwards, in a vertical pony tail in the middle of where the hairline starts at the forehead.
This can have multiple advantages especially in the hotter months of year, avoiding the hair sticking to the subject's forehead.
"Dude, you're rocking that frony-tail!"
"Do you have a hair rubber band? My hair is sticking to my face like white on rice, imma frony-tail it"
The pony tail put up due to the sweaty nature of a fraternity party. The point where your hair is drenched with sweat and the best recovery is a high ponytail in order to give air to your neck.
Did you see that girl at the DKE party last night? She was drenched with sweat and in serious need of a frony.