Bum cum is a fancy delicacy originating from Canada. Let me teach you how to make it.
Step 1: Prepare a batter consisting of male sperm (preferably sperm with an STD because it increases the flavor)
Step 2: Season the batter with smegma if you want a more cheesy flavor and period blood if you like a more sweet, irony flavor (you can also use both but it is optional).
Step: 3 Chill for 45 minutes or until ready (you'll know it's ready if it becomes crusty on the top).
Step: 4 Now here is where the “bum” part comes in. You're going to want to shove the batter up your bum and let it sit and marinate in there for 20-30 minutes (you might have mild uncomforts and may develop hemorrhoids but trust me, it's worth it).
Step: 5 Now you're going to want to take that batter and bake it for 24 hours.
A playstyle between two players (typically in Plants vs Zombies Garden Warfare 1, 2, or Battle for Neighborville) both playing sunflower while using their heal beam on each other. They typically try to stay together the whole game and are a nuisance to deal with. If you are a bum flower, log off the game and go seek professional help.
Those bumflowers were a pain in the ass to deal with. This is the only situation where people actually play support flower.