I've wanted to try knotting either my large rex/fenrir anally overnight whilst I slept, but have been unable to keep one in, also is there a comfortable position to fall asleep in without discomfort? is there any tricks to forgetting you've got a happy friend snug inside you so you can fall asleep easier? I can knot both snugly, rex is barely noticeable once in but fenrir is quite filling. I want to experience the feeling of waking up and realizing you've still got a friend happily snug in you. I use plenty of lube so that's not a problem. I've thought about trying to tire myself till I pass out but thatd uncomfortably take too long... any tips and tricks would be highly appreciated.