I bet if more people did some bouncing while they were dumping they wouldn't need their Ex Lax.
The official race track technique is to back the bike up in second gear against compression. Put it in neutral, push as fast as you can, pop it into second gear, WITHOUT TOUCHING THE CLUTCH. If you pull in the clutch and put it in gear the motor will tend to roll forward, so you won't build momentum in the flywheels.
............ I did this at Wal Mart last year when I had battery trouble, ....... a white haired old guy Bump Starting a vintage looking bike. .......
Downright normal - compared to some of the Wal-Martians I've seen !