Gentlemen, this is why you do a very good walk around and inspection before buying.

Always, always buy the insurance. Lift up the carpet, look around for clues, is the deal too good to be true? Any visible or hidden body damage?
A son? Really? I'll bet he was the one that outed mom. I can imagine how that conversation went. " Dad I been noticing that Mom ain't like all the other girls I've been dating these last couple years. Why, whatever do you mean son? Dad, Mom has a huge adams apple, and she stands up to pee, none of my girlfriends can do that. Whats more, she is like 47 and has the perkiest set of, well you know what I mean, mothers of my girlfriends are well, pretty saggy. Dad, as Steven Tyler said Dude Looks Like A Lady." You gotta know how dad answered this, cue Cheap Trick, "Mommy's all right , Daddy's all right, they both seem a little strange."
I gotta stop this, sorry.