Let's come up with the worst champion bot lane.
Kog'Maw and Blitzcrank.
A champ who needs 30 minutes to ramp up and the other who is all about early kill pressure in lane. Neither synergize at all as far as the lane goes.
29 Comments
Bard and Bard.
Bard+ anything
this does not work. Leona can't poke, Caitlyn has no All-In. Personal experience op. Ima going in!!! Cait wtf???
Kill potential, what is that?
Riot already beat you to the title. They made Bard.
Ashe/Soraka, no escapes or mobility, easily all-inned by everyone and out traded by everyone.
Time to farm my Q stacks.
Hue Hue Hue Hue. E.
"I'm a bruiser who's really weak to ranged champions!" :D
"I'm a support who's only movement impairing CC is a heavily delayed snare!" :D
By worst you mean "to deal with" or "play as"? Lets go with "play as": Bard
Just Bard. There is no one else.
A champion that needs peel and support early game and a support notorious for leaving said champ out to dry
Old 
+
Before Karma's rework, her shield and chain revealed allies in stealth.
ezreal + janna
Bard/Soraka.
+
Because that somehow makes sense to some people.
+ 
I think the worst STANDARD adc/support bot lane combo would be dependent on who they are against
twitch + soraka