Someone who did something that annoyed you (made you anxious), but you can’t be mad at them because it’s not really their fault (and they’re also seriously adorable). A dork.
She called herself a dilweed because she took so long to reply to my messages, but I’m really the dilweed for overreacting and freaking out about it. (Sophie’s amazing and a dork and a wonderful human who means a lot to me.)
Popularized by the Beavis and Butt-head TV series, "dillweed" is a derogatory term used to describe irrational/dumb behavior and low intellectual capacity, usually resulting in some sort of consequence.
Literally, "dillweed" likens someone to pubic hair - "dill" being slang for "penis" (think dill pickle) and "weed" being slang for "hair."