A small catapult designed to fire at crotchlevel, thus insuring maximum damage and maximum hilarity. Used just as often for pranking as it is for self defense.
Remember crotchapult is for self-dense or self-amusement only. Do not use a crotchapult to commit crimes or use on pets, small children, or women without a sense of humor.
When some resigns or retires from a job, they are on "eternity leave". This can also refer to someone who has passed away, especially someone who worked somewhere for a long time, retired/resigned, then passed away later.
Oh I'm sorry, you didn't know that Kelly is on eternity leave? She resigned and moved to Hawaii!
With regrets I would like to inform you that my boss is officially on eternity leave. I will never see or hear them again. Ever.