How does one drop the weight while spreading cheeks?
I think I have an elegant solution to this problem.

If instead of a ten weight one were to arrange 10 cats, the individual mass of each cat does not matter so long as their combined mass is 10x that of the projectile kitten, in a circle facing inwardly to the mass receiving end of the lever. On this end one tapes a mouse and then cover it with a cup (polystyrene or paper) with a string attached.

All then one has to do is hold the string in either hand when clutching buttock and shuffle forwards. The mouse is thusly exposed and the cat collective pounce simultaneously to launch the projectile cat into one's bot bot.

It goes with out saying this requires the projectile cat to be facing away from the bait mouse otherwise it will become distracted and not fully focused on its special mission.
( Draconacticus Reject shampoo. Demand real poo!, Thu 19 May 2011, 16:57, 2 replies)

blindfolded projectile cat

( Vipros. clever got me this far, then tricky got me in, Thu 19 May 2011, 16:58, closed)

You see, this is what you can achieve when everyone works together.

(Bazongaloid, Thu 19 May 2011, 17:02, closed)

I have consulted my Wilf Lunn Book of Machines
and I reckon a string attached to your big toe, pulling on a match hinged on the side of the matchbox, which lights a candle that burns through a string holding up the weight.

Safety Warning: don't fart whilst the candle is lit.
( brown-wings Made with three kinds of butter, Thu 19 May 2011, 17:05, closed)