Does messy diaper change make you hard?

When you get your messy diaper change does your penis get hard and does your diaper changer do something about it?

After becoming urinary incontinent and wearing diapers 24/7. I would normally get somewhat aroused at change or by just wearing diapers. Sometimes a full to a weak erection probably the first three years. Since then it's pretty much no arousal anymore. I do all my changes myself and not sure if this would change if someone else changed me. I have lost more feeling in that area over the years. Sexual arousal by wearing or at changes doesn't happen often anymore.

I do believe that as I gotten older, my erections have been not as full or as hard as they were when I was younger. However I still get aroused at even the oddest of times, like when my wife and I are out at the mall and my wife is being helped by her saleswoman while shopping for clothes. I will often want to go pee in my diapers when my wife is trying something on and the lady is assisting to undress and as I begin to wet, I become aroused and my pee slows to a trickle. I still become arouse when my wife changes me, although again not as fully erect as I used to most of the time. Since even now I don't mess very often and only when my wife allows me to, I will become quite hard as my pooping finishes and I look for someplace to sort of hide, partly in shame for acting so childish and sit down on my mess, feeling it spreading out up my testicles, and up my crack. I try to sustain it by using my hand to squeeze my wee-wee and spread my poop around. Later as my wife changes me and I feel so humiliated that she sees me like this and tells me how disgusted she is with me for being such a baby. By then I can't contain myself and plead with her to wipe my pee-pee and let me cum.

I dont think that a messy diaper would make me hard but i know that when my temp is taken rectal it causes me to have a nice stiffy. at times.

Since going back in diapers full time 8 yrs ago I find myself not getting hard as much as I did in my younger days. I guess I have gotten use to having my diaper changed over the years.

I seem to become aroused just reading posts of Zity. I'm wearing diapers and rubber pants now and my hand is underneath my diapers, feeling my pee-pee. Have to type one handed. But man, it feels so good and my diapers are already wet. Any one else here do this?