When I had the cops at my house during my car theft investigation, the young cop (late 20s) immediately started asking me questions about my Geezer Glide (he currently rides a Low Rider). My Ducati was sitting next to it and he totally ignored it and didn't ask any questions about the Duc.
A few days later I went out for a beer with some of my softball mates. One of our players (who is 27) talked to me non-stop about how badly he wants a Harley and was even wearing H-D boots.
I don't know what doofus stereotype they fit but one was white, one Mexican, and they were both in their late 20s.