hehehe, it was a joke but I guess a little background is in order.
It's Pavlavian, the majority of men were in a heighten state of sexual arrousal when first exposed to women's underwear.
WE (for the most part), are genetically predisposed to be atracted to women, especially naked ones.
As one undresses a woman, one's state of arrouse increases. The second to last stage of which is when she in in her underwear. So, your mind equates naked woman with underwear. Once it is removed, the woman is naked at one is at full arrousal. You mind anticipates that next step.
That's why alot of guys get turned on when they see a thong ride up, even though she is no where near naked, because the first time they encountered that, they were in a heightened state of arrousal.
The bad thing is stuff like this is transferable. That's why pornogrophy is so dangerous.
As one progresses to the "harder" stuff, it is replacing one set of stimuli for another and reprograming how you think. With enough exposer, the earlier set of stimuli no longer works and the subject uses the new stimuli as a baseline. Once that one wears off......on to the next level of stimuli and on down the line.
Unfortunatly, that's the nature of the beast, what the subject has grows old and no longer does the trick (the spouse) and turns to "outside stimuli".
I wouldn't seek out a couselor yet. Like I said, it's a joke.
If you think about it, it's no different than any other interest.
One may have a BE now, and it'll do for a time, but soon it'll be "buy this" for it, "do that" to it, "ooooww, there's another BE for sale". Next thing you know you have a garage full of BE stuff and you wife is hanging her underwear off of it..........