As in, I’d have sex with a hamburger. In a moronic twist of advertising trying to be hip and down with American youth McDonalds adopted the ‘i’d hit it’ saying (which as anyone who’s been reading the internets these last few years will know, means ‘I’d have sex with her/him’) for their McDonalds online ads. Urban Dictionary on I’d hit it:

1. I’d Hit it
Vernacular, commonly used by males, meaning, “I would like to have sexual relations with that female.”
“Wow, she’s stacked! I’d hit it!”

Funny. Link to World Champion blog post about this with pics. (via.)