Notice:

[gsatterw]

Do not turn your engine on when your tachometer drive gear is out. It will splooge oil out of its face.

[codajastal]

LOL I think someone did just that 

[Suzuki Stevo]

Don't start the engine with the dipstick removed either...ask me how I know 

[gsatterw]

it seems the oil circulation is greater than anticipated in a running engine

[salamander]

And if you decide to check the oil level after you've started the engine ... don't ... unless you have a steadier hand than I do.  There seem to be some moving parts in there near where the dipstick goes.  No personal experience with this, of course. 

[yamahonkawazuki]

been there, done this, plenty of ruined shirts to show

[GI_JO_NATHAN]

Do not turn your engine on when your tachometer drive gear is out. It will splooge oil out of its face.

Glad mines electric.

But don't ride to work with your dip stick not screwed on..
Takes a minute to figure out where that oil on your right boot came from.

[average]

How about riding about a mile up the highway at night after checking it and after you get off on your exit; you're wondering why you're smoking like Ghost Rider....but this has never happened to me 

[mass-hole]

And if you decide to check the oil level after you've started the engine ... don't ... unless you have a steadier hand than I do.  There seem to be some moving parts in there near where the dipstick goes.  No personal experience with this, of course. 

Guilty as charged. . . .