Arthur

Best describes a batty boy or someone who tends to act sus but not in comedic way. Usaully has a bad trim and gets no tings. Arthur's usually always give themselves a little nickname like "Big A" to hide the fact that they sound like they're a peasent in the Tudor times or something

URRRRR you're being an Arthur mate
If i was I wouldnt call your kid Arthur g that a bit batty still