Used casually among friends or in humor, but can be rude if not careful. After spilling his drink, Mike smiled and said, 'I'm such a numbskull sometimes!'
Pro Tip 2/3
Mild Derogatory
Less harsh than other insults, but still negative tone about someone's intellect. Jenny called herself a numbskull for forgetting her keys again.
Pro Tip 3/3
Action Oriented
Often used to criticize a specific unwise action rather than general intelligence. He's not always a numbskull, just when he rushes decisions.