dillweeds

Dillweed is mild slang for a foolish or annoying person—someone clueless or irritating but not seriously offensive: Don't be such a dillweed.

The insult gained currency through the animated series *Beavis and Butt-Head* in the 1990s.

It sounds juvenile and is rarely used with genuine anger.

Separately, dill weed (two words) is the feathery leaves of the dill plant, used as an herb.