(dragonball z)
vegeta:goku, im going to rip your fucking heart out, eat it, cut your head off and put it where your heart was!!
(dragonball kai)
vegeta: hey goku want to drink some apple juice, best buddy?
To'kai came to be when a dude tried saying "so high" with his dry lips and ended up saying to'kai. Basically it is used when you've smoked so much and can't smoke no more weed. Often used as a sign to others that you're alive'n'kickin but are currently in "stand by" mode.