I bought a cheapie pump at Target last year and couldn't figure out how to get it to work this year. Went and bought a nicer floor pump at the LBS and actually looked at the tag before tossing it. Turns out the nozzle lever operates opposite of every other one I used as a kid, sticking up to pump, folded down to put on/take off. Whoops. On the plus side, this pump is supposed to work on both types of valves without adapters that I'd probably lose!