ya hes right, u gotta learn how to do an endo, which is having either your right or your left pedal (preferably your left for rat hops but nvm that) towards the back of the bike. when u do this you want the left pedal facing down and your left leg pushing on the pedal really hard and just lean way forward (with your chest almost all the way down to the handle bars) and lift/kick your leg up and it will lift up the back tire. for big ones, push on the handle bars, get used to doin that without having your chest down to the handle bars then try doin it while lifting up the handle bars. -Bunny Hop-