Hi, I’ve just tried this, without tape. I tucked my little man up (quite tightly) behind into my crack first with my sack behind him and then I pushed my balls back up the canal (that bit took a few go’s but I got there) and wrapped the rest of my sack around my boy, pulled up my panties (sheer with velvet spots!) no need for control panties. Now all I have to worry about is my belly sticking out.
Take care, Bee.