Doing so will activate the weapon in the slot whilst watching the TV, but will not execute it until the moment you stop watching the TV. Annoyingly, if you have a slingshot with explosive ammo in it, you will end up destroying things in your house never for them to return - resulting in the need for Alt-F4!

Other bugs include:

Mummies being downed in Calico Desert Mines, but immediately getting back up and you cannot hit them because they're supposed to be lying on the floor. "Missed, Missed, Missed".

Jumping on a horse while holding the input before actually landing on the horse itself will stop galloping sounds until the input method is released and pressed again.