Pronounced "fya powa"
The quality of having built or
swole arms. Arms (or specifically biceps) are sometimes known as "
guns" so to have strong/muscular ones equates to having "firepower."
As
heard in Night at the Museum 2.
Check out the gunshow over here, *flexes each
arm*
Boom,
Boom, FIREPOWER! (FYAPOWAAA!)