As a top lane main my worst nightmare is...
A duo between the enemy jungler and their top laner. When i check their match history to see if their top laner is duoing with their jungler, and they are, i just cry silently to myself knowing im going to get camped and dove all game and all i can do is pray my team helps me and does not let my lane die
or cc
to score an easy double kill as they dive you recklessly and forget it's actually a 2v2 (who needs a team, when you have your trusty tower ;D)
There are a bunch of champions that are not gonna let you run around your tower. These are just some examples.