Jake a Fake?

3/31/2008 2:49 PM PDT BY TMZ STAFF
Returning home from a Mexican vacation, tantastic Jake Gyllenhaal hobbles after a charred Reese Witherspoon and her kids - then doesn't.

Looks like Jack Twist is about to get all Jack Nasty by finding a new use for those crutches - swinging them at a paparazzo's lens.

Reese's boytoy has been gimping around since getting hurt playing in a game of pick-up basketball.