1) Someone who kills others using breakfast cereal, or someone who goes to the store and kills cereal.
2) Someone who turns delicious Froot Loops and turns them into nasty cornflakes, or even putting juice rather than milk into another man's cereal and giving it to them.
3) Someone who eats cereal with juice instead of milk.
HE TOOK MY FROOT LOOPS AND SHOT THEM!! Now they have turned to CHEERIOS?? WHAT A Cereal Killer.
Ok, well Cheerios are ok. They are still good. I will still eat them.
NOT ANYMORE! HE BURNT THEM AND NOW THEY ARE Flaming Hot Cheetios!! GROSS!!
Someone who overuses a joke so horribly that not only does it make entirely unfunny it also annoys everybody. Or someone who steals a joke and uses it so often it ruins the joke to the annoyance of the creator, sometimes causing violent outbursts.
Hear the one about the chicken crossing the road? "Who hasn't? The joke killer has been using that one 100 times a day for the past month!"
Someone who totally ruins your stoke when your running high. Norma,oh because their stoke isn’t as heavy
Heavy stoke bro “Dude, epic bluebird shit today. Totally awesome out there on softies and some freshly was spitting from the clouds. What an awesome day”... stoke killer say (normally named Pete) “uhhh yeah niceee man, but like the sun probably made it icy and hard pack. Sorry that sucks man. Maybe next time will be better”