Well Magneto would be closest to me with his helmet on; throwing bridges at anyone else who tried to get near. I'd be shouting bridge related puns. 
"Cry me a RIVER!" *WHAM*
"Check THIS load bearing capacity!" *CRUNCH*

Edit: "Don't CROSS me!" "Looks like your ARCH-nemesis is....GIRDERS!" "Time to pay the TOLL!"

EDIT: Thanks for the gold I guess, but it makes a crap magnet. ;)