Justice League Adventures (2001-) #7

Meet the Fastest Fax Alive as the League's speediest member tries to save time by traveling through the telephone lines—and accidentally dials a fax machine by mistake! But being flat as a pancake isn't all it's cracked up to be, and when the fun of slipping under doorways wears off, the Flash thinks his career is over...until the Earth is invaded by amazingly thin creatures from the Second Dimension!