I think this set might be the most genuinely awful mess I've ever seen a person get subjected to, which I say as a compliment. I hope you appreciate how insanely fortunate you are to have a partner who's so willing to help you explore your kinks. It's equal parts heartwarming and disgusting.
Oh yeah that's what I've heard about lemon meringue, so I've never tried it. Chocolate, coconut etc cream pies are completely different and my favorite WAM substance ever. See: my profile pic lol!