Many times.
Most recently, its been by my ex-wife.
The most recent time was about a two weeks ago.
I was taken over her knee and spanked 10 swats by hand, 20 swats by a hairbrush, 10 swats by a crop, then finally 10 swats by her hand again. I came to her to borrow money. I was lectured, spanked, teased, and made to beg, then she did loan me the money I asked for.
A couple of friends, me, my sister, and my girlfriend was at a picnic. About 9 of us total. Nobody but my sister new that I was in diapers as punishment for being a BRAT. Although, I think that my girlfriend kind of guessed it. After a while I wanted to leave, and my sister and girlfriend did not. So I pulled my sister's hair in an attempt to motive her. She pushed me and I tripped over a horse-shoe pole. After I was on the ground, my sister told everyone about me wearing diapers. They wanted to see, so they held me down and took down my pants. My sister and girlfriend decide that sense my pants were already down that I should get a spanking for pulling my sister's hair. I was moved to the picnic table and held with my legs in the air like I was being changed and I was spanked, alot and hard til I was crying. We ended up staying and before we left I was forced to use my diapers. It had been about 8 hours, from 1pm til about 11am til 6pm, and I need to pee and poop. We werent going anywhere til I did.