Now if the battery isn't completely dead (aka you have some headlights etc.) there may be enough electrical juice that even if it won't turn the starter, may run the ignition and fuel pump to let a bump start work.
There's also the chance a fully discharged battery may have been overly discharged and is kaput.
@Obo I have to wonder about posts like this and the other about washing a key fob. In this case, it would see quicker to charge the battery than register to a forum and ask the question regarding a dead battery. Besides, the poster didn't bother to spell the name of their bike correctly.
@motocopter there are lots of folks who ride bikes who know little about them, just like cage drivers.
And it's often easier (and sometimes wiser) to ask someone with experience than looking for the info yourself and getting wrong advice. Dealerships can also be either a source of incorrect advice or an expensive option, so I take every post at it's face value - even if it's an oil or tire type thread by a troll