I’m not sure Trump would understand the reference, assuming he even bothered to read Schumer’s tweet.
Bullying or not, Trump’s tweet made me really want people to start referring to him with the same kinds of childish nicknames, Dumbass Donald, Tinkler Trump, etc. I think he does it because it’s something he still hurts from going back to his childhood.
On one hand I want our politicians to be adults and act with some amount of intelligence and maturity, but on the other hand I would love it if they started treating Trump with totally snide and condescending public statements whenever they’re on camera, like “Oh yeah. . . Dumbass Donald? The guy who still can’t believe he was elected President? We voted on that bill and he signed it into law with a crayon, so he can stop complaining and go back to lying about his golf game.”
Apart from the bullying, Trump shows how unfit he is for his job. Schumer may have opposed the proposed treaty, but he at least understands it’s now a signed, ratified treaty to which the US is party and the implications for violating it
ETA: The above is an extremely rare sighting of me defending Chuck Schumer.