A person that is named (finn/finnigan/flinn/finlay) that would finger a girl on the spot. No matter were they are.
"I was with finn last night"
"Oo what happened"
"He gave me the best flinngering at the park"
"Bro did you see octavia today?"
"Brutha she has the IQ of a watermelon"
(Implying she is retarded)