Bullies aren’t very creative
It turns out that almost all verbal bullying (ie: insults) are about 6 basic things. This means that even though bullies like to insult people, they aren’t very creative in their insults. Perhaps if they watched more Monty Python or read the 7 page curse in Tristram Shandy they would be more creative. Of course, if they did those things, they probably wouldn’t be bullies in the first place.