Aside from the lack of 'silver' hair, the rest isn't even remotely true, but he refrains from resorting to school-yard bully tactics and lets it all roll off.

"Name's MacGyver."



[ooc: yes, I know - it hurts him to be snarked at - but it's soooo funny! And, yes, Jack may recognize his name if you decide he should - considering Carter mentioned 'MacGyver'ing' something in the 1st freakin' episode!]