In my experience anything really thick like that will take a good deal of scrubbing to get off of you & whatever surface it ends up on. But if you are just using one or 2 cheese cakes it shouldn't be that bad. I would avoid washing it down the drain though cause it could cause problems.
After working late one night I was closing up a restaurant with a hot little waitress. We had a couple of beers and a shot and then we started chatting about what turned us on and the conversation turned to messy. There was already some sexual tension between us and she had been flirting with me since she started a few weeks prior. She went to the bathroom and brought a piece of cheesecake from the display case, set it down in front of me and asked if I would like to eat it off of her. Before we left that night I put 3 pieces of cheesecake down her panties and took her back to my place. I had to sneak her past my roommates where were watching TV down to my bedroom. After 30 minutes it had warmed up and squished into all her little nooks and crannies. Good thing I have a sweet tooth. It was a night I will never forget and hopefully she has not either. Wish that I knew what happened to little Nicole. She only worked there a few months after that but she always looked at me with a smile when she walked past me with cheesecake for a table.