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Nobody can go on a Twitter tear quite like Donald Trump, and even more eyes have been fixed on each tweet ever since he announced his plans to run for President back in June 2015. Whether you’ve engaged intentionally (#AskTrump) or been thrown into a tweetstorm against your will, it’s hard to deny that Trump has one of the of the most colorful Twitter voices around. His feed is also among the most accessible ways, outside of debates, for the average person to get a glimpse into the thoughts under all that hair.

Some may say Trump’s actions on Twitter are akin to cyberbullying. Donna Clark Love, a bullying expert, weighed in: “The people who tend to be bullies, online and in person, have an average or higher self-esteem than the one being bullied.” Here are some of the most memorable incidents of Trump’s bullying, ranked from least to most offensive.