It probably tells us a lot of how sweet and innocent Momo is that this is automatically the first option that jumps into her mind. I suppose that, in some ways, Momo doesn't know how right she is. May's source of embarrassment is something that she wouldn't admit to because it doesn't mesh with her public persona!
Additionally, with regard to Marigold and Momo's reactions to the idea:
So say us all!Marbear's complexion has really cleared up of late. Noxzema or ProActiv??
I credit entirely Dale. Having him around is motivating her to greater levels of self-care and a slightly healthier lifestyle. If nothing else, she's getting lots of exercise (much to Momo and May's annoyance)!