これも発展しそうです

https://stemur.tumblr.com/post/140806602839/ingrid-whips-davids-hard-cock
https://stemur.tumblr.com/post/112522777884/sadistic-bitch-mistress-karin-whips-a-guys-hard?is_related_post=1
https://stemur.tumblr.com/post/106256394849?is_related_post=1
https://stemur.tumblr.com/post/112708475549/there-is-a-price-to-pay-for-getting-an-erection?is_related_post=1