Hahaha!!!! Your comment made me laugh!!!

I have one of my own: "You're way too mushy like a banana you make me sick!!!" which can be used as a reply to someone's pickup line. :-)

My interpretation of "You're the whipped cream topping on my birthday cake." is "You're too sickly and I just want to put you aside." LOL!!! That's just because I don't like the whipped cream topping on any birthday cake.