I'm 15 and I have pretty strong arms and good biceps, but my forearms are like skin and bone! Ive got handgrips and barbells, is there anything else I could do to build forearm strength. I'm tired of being called twiggy.

Are you doing wrist curls?

What are they?

Barbell Wrist Curl (http://www.exrx.net/WeightExercises/WristFlexors/BBWristCurl.html)

A good home exercise is towel twisting.

Kettlebells may help develop your forearms.