Bra Strap Adjustment

My girlfriend's mother is forever adjusting her brassiere. She says her straps do not stay put and it's really an annoyance. An annoyance for her, but not for me. I seriously get excited when she is working those adjustment slides on her bra straps. I asked her once if I could help and she removed her blouse and showed me the problem. I told her to get another bra so we could compare them. She took off her bra and I could feel something happening in my briefs. She stood there totally topless and I asked her if she would give me oral. She did and that's the end of this story.

— Mark, 26