We destroyed Vayne
Me and my ADC forced her to stay under tower, got a 4 kill advantage over her because she was too cocky and kept forcing fights her support didn't won't to go through with. Even creamed them in a 2v3 when their Eve ganked. ADC has nearly 3 times the CS as her.
Vayne leaves lane to steal top lanes farm to get a botrk, team fight breaks out and despite being 2 levels behind she picks up a Quadra with just her botrk.
If that had been someone like MF, or pretty much any other ADC in game, they would have had zero impact on that team fight with that kind of disadvantage.
If Vayne is allowed to pull this kind of crap after completely fucking up her laning the way she did and making that many mistakes, then every ADC should get that same privilege.
Edit: Just destroyed another bot-lane with my ADC, similar situation with the Vayne earlier. It was Varus and Blitz. **But guess what? **When a teamfight broke out, Varus sat in the back doing tickle-damage and we wiped their entire team with half of our HP to spare. Varus messed up, and he paid for it. That's how champions should work until they get a window of opportunity (pick off some kills, farm a lot, get the items they need.) Vayne's window of opportunity? "I got my Botrk! Time to solo anyone on the enemy team."