Which body part do you immediately check out?

[GrandpaDave65]

I know it's impossible to "check out", but for me the brain / mind is the most erotic part of anyone's body ... the most powerful erogenous zone.  For me it's all about "attitude" and less about looks.  While I'm in a sexless marriage I have had a side piece on occasion and most would consider her a significant step down from my wife (side piece is literally 5ft tall, 350 pounds) ... but she has an attitude that exudes sex, love, adventure, and intimacy that is just incredible! 

Give me that attitude and I don't care what package it comes in!