I'd say that this word applies even more fittingly to feelings of sexual arousal and maybe even orgasm evoked by stroking, kissing or sucking the ear or the area around it. I'd always thought it was just a hentai game myth that the ear is an important erogenous zone for girls (it certainly isn't for me) - until I started to smooch with my current girlfriend last Friday and found that gently sucking her earlobe would make her breathe harder and harder until, it seemed to me, she was about to get off right there and then, without me so much as touching her breasts or anything. I couldn't explore the phenomenon fully because we were on a park bench and she was feeling embarassed of being seen, but next time, I'll try to find out how far this really goes...