My favorite style of panties are "Skimp Skamp" brand briefs with a middle seam in the back. they fit perfectly too and do get an erection in them at times. I like wearing them under leotard and tights when going to the doctor's office for medical evaluations. As usual, I'll have to undress completely, "Skimp Skamp" panties included. She or the nurse help me get undressed, and once my leotard and tights are off, she lets me stay in the soft clinging panties a little longer and when it's time to start my my examination, she will gently place her hands on the waistband and slowly roll them down below my hips, gently unsnugging my erect penis from them . I close my eyes and squeeze my legs closely together, while enjoying feeling her soft hands and clinging "Skimp Skamps" coming off. They feel so nice wearing them with my leotards, yet some anxiety while waiting to be called in by the nurse, knowing they will soon be off with my leotards, then naked and gowned for the doctor's examination.