Tinypic works for me but I don't know if they allow nudity and don't want to find out the hard way.
I just saw this:-
"TinyPic is shutting down in 2019
TinyPic is shutting down its image hosting service because we can no longer support a free service that derives 100% of its revenue from ever declining on-site ad revenues.
While you may continue to host images from our site until further notice, we encourage you to consider selecting one of the premium plans offered by our sister site, Photobucket.
Thanks for using TinyPic for your hosting needs over the years. We apologize that we can no longer continue providing this service, but Photobucket is a great option going forward."