What is Fiddlehead?
1.
A half-hearted or short-lived effort at oral sex.
I thought we were going to have sex, but she only gave me fiddlehead.
See
2.
a fern that grows in the Northeast and Canada. Grows along riverbanks. A delicacy in springtime in Eastern Canada. When the fern is young, and ready for picking, it looks like the head of a violin or fiddle.
Whip up some fiddleheads with butter on them.