Stare, walk up to him and say "Are you Silver? 'Cuz, uh... I'm a big fan." Then proceed to grin fangirlishly, compliment him incessantly, and finally walk calmly away before hiding behind a building and letting out all the restrained fangirlism.
Look around, slap Silver, and then kick him/her in the crotch to make sure of the douchebag's gender. Then, I stomp his/her crotch into nothing for foiling my disguise at the Radio Tower in SoulSilver.
Look around Silver, 'accidentally' spill my drink against drug test, say "Hi."