The Vampire Diaries: 10 Worst Things Bonnie Has Ever Done
7. Attacked Damon At The Carnival
Granted Damon had the attack coming, but at that moment Bonnie took her anger out on the wrong guy. She blamed him for every bad thing that happened to her up to that point, including her best friend Caroline getting turned into a vampire and killing one of the carnival workers she'd had a spark with.
Damon deserved the major headache she caused with her magic, but she did it for the wrong reasons that time. Though better she took her rage out on Damon than on Caroline.