I can't do it, either. Seems impossible. It's something only boys can do. I'm scared of it. Holdover from falling while trying wheelies when I was little.
My 12 yo boy can ride wheelies and bunny hop and jump off ramps and lift his bike tires over everything, no matter if it's the little trick bike, the old Buick or his Trek mtb. I try to learn from him. Can't do it.
However, he can stand on the seat on one foot in a graceful arabesque, and he can't do a track stand. But I can.
Karen