I Never Wear Panties
It's too uncomfortable. Women's underpants are cut for women and women (well most woman) don't have the parts I have.
When I was a teenager my sister stole my underpants and wore them while on the rag. She stained several pair. I was pissed so I stole some of her undies intending to stain them in my own way, not for anything sexual. I wanted to wear them all day and not wipe myself (yea I know. really gross but I was a kid and really pissed). They were so uncomfortable that I had to take them off.
When I was a teenager my sister stole my underpants and wore them while on the rag. She stained several pair. I was pissed so I stole some of her undies intending to stain them in my own way, not for anything sexual. I wanted to wear them all day and not wipe myself (yea I know. really gross but I was a kid and really pissed). They were so uncomfortable that I had to take them off.