Dutchy

Or Dutchie. Nickname for people with last name Holland or sometimes Mulholland. Because, Holland people is Dutch, get it? Sometimes uneducated peeps apply this nickname to Gaelic last name Mulholland. Mulholland does not share a common origin as Holland, don't be uneducated.

Dude 1: Hey Dutchy what's up!
Tom Holland: Stop calling me Dutchy is what's up!