Holding supports hostage is NOT okay

Had to vent about a game where I picked Lulu and was paired with an extremely toxic Kogmaw who demanded that I follow him around the entire game. The first red flag was when in a close 3 v 3 he got a kill and I secured 2. He says "noob, stealing kills, report lulu, afk." then afks for 40 sec.

After lane phase he would mindlessly push bot while I tried to ward the rest of the map. He ignored any enemies spotted in botside river and continued to farm as if he were invulnerable to getting 3 manned. Unsurprisingly he was proven wrong. After revive he sits in fountain for another 40 seconds while infernal is in contention. We lose it, 4 to a teamfight, and two towers.

He again afk pushes bot and while I ping my cd's to let him know to wait 14 sec for my ult to guarantee the 2 v 2 fight he insists on standing still to get blitz hooked. Is 14 seconds too much to ask to play safe? "Yes it is. Or just stay with me and its 100% game over 20 min. so just play with me and win the game. afk for sec to punish poor lulu" (it wasn't a sec it was 1 min 16 secs on fountain). Yet we still manage to win a 4 v 4 teamfight in our redside jg.

Off he goes afk pushing bot again. And ofc he dies again while our team desperately tries to catch up to the 2 man gank. 4 total go down when the enemy team responds.

Yes he has ivern and lulu both with redemption. But does that mean he can get hooked and be ok? Kog certainly thinks so. He stands still DARING naut to hook him. Unsurprisingly he gets hooked and... dies.

We have a good teamfight for a change, but Kog is overconfident and dies in the retreat. We lose baron.

He refuses to group to farm a fat top wave. Our Ahri gets blitz hooked as we 4 v 5 defend mid inhib turret. We lose the teamfight and both nexus turrets even though kog joins. We respawn, push mid as hard as we can and contest the enemy baron attempt. We win the teamfight and Baron is secured with a clutch ivern smite. One teamfight later around elder drag and we run it down mid for the win.

Kog: "Told you I win, you guys are noobs." I cuss him out and tell him he's toxic and a piece of $#@! In lobby Kog:"Check dmg and get carried."

He did 70k (20k more than their ad). But with a lulu and ivern with dbl locket, dbl redemption, and an ardent censor you better deal damage. We almost lost when the enemy took both nexus turrets. Even a fed Kog has to play with a brain and some semblance of teamwork. Our team hated frontlining (mundo kept calling him a puss and told me not to follow him) and shielding that selfish prick (ivern pulled dbl duty with me). Do NOT hold your support hostage.