An Awkward Anal-ysis

Last night, mom's boyfriend invited the two of us over for dinner and to watch Grey's Anatomy at his house. This would be my 2nd time at his place. As a background, I will describe to you my first experience there:

My mom had taken me out there a couple of weeks ago while he was away on a trip, just so I could see the place before being thrown into an awkward dinner situation. It was neat and tidy, and had quite a minimalistic decor. I couldn't find the bathroom to secretly search through the medicine cabinet, and now that I think about it, I'm glad I didn't. Finding Viagra or something related would've sent me to therapy for the rest of my life. I then scanned his book shelf and collection in his living room. There were a lot of intelligent books, mostly related to psychology, which was his profession before retirement, and then I saw the top shelf. About an arm-span length of books related to sex were staring back at me. These weren't Playboys or anything like that, no this guy's into the hard stuff: Tantric Sex, Group Sex, The Female Orgasm, The Female Clitoris, Kama Sutra, and other related titles were traumatizing me as I looked at that shelf. I asked my mom about the shelf and she just shrugged it off as him being a psychologist. I will point out to you that he was in no way a sex therapist, he was a university psychology professor. I figure mom is fine with it only because she's the one, ahem, "benefiting" from the sex shelf.

Fast forward to last night.
We apparently got there a little early, because as soon as we entered the house, we saw him standing there in a bathrobe that was long enough to barely cover his old-man dangly parts. Mom kept asking him to show her where things were in order to pour us all some wine, while I kept asking God to keep him from bending over. After making mom get rid of a pair of his underwear I found on the kitchen counter, I poured myself a very tall glass of wine.
After he finally put clothes on, we were sitting there in his "sex book room," as I affectionately call it, eating our pizza and watching Desperate Housewives, waiting for G.A. to start. Then he turns to my mother and says, "I made up a poem for you."
I was sitting there thinking, 'this could be nice' and then he informs us that it is about her upcoming colonoscopy (which he convinced her to get, by the way.) Why he came up with a poem about my mother's looming anal-probing, I don't know. I'm too horrified by the experience to recite it back to you word-for-word, but it started out calling my mom middle-aged, and had to do with the doctors putting her in "various positions" and finished off calling her butt cute. He recited it three times, just to get the wording right, after mom and I had told him twice to stop and tell her the rest after I was gone.
I start therapy next Tuesday.
I was ready to leave as soon as that recital happened, but last time I left to avoid confrontation (with Jim at Easter last year), my mom called me ignorant. I took large sips from my wine, sat through the longest Grey's Anatomy episode ever and high-tailed it out of there. The guy is nice, but the sex thing is just too creepy. It's as if the guy is 60 years old and still doesn't understand the meaning of the word "Inappropriate."
Does anyone else have thoughts on this?