dildo
1. An object resembling an erect penis that is used for sexual stimulation. I've never tried a dildo, only a vibrator.
2. rude slang A male who is stupid or irritating. This usage alludes to Definition 1. Did you hear that guy's ridiculous question? Geez, what a dildo.
dildo
(ˈdɪldo) n. a stupid person, usually a male. (Rude and derogatory. The term refers to an artificial penis.) Hank can be such a dildo sometimes.