What's Your Fvavorite "I shouldn't eat it" Treat?

In Israel we call this "ice cafe`," and it's a favorite of many including me.  I'm not quite sure what's it's called in other countries.  Unfortunately it's filled with yummy, addicting calories, though there are "lite" versions.

It's like a liquidy coffee ice cream.  I had this one at the Sharonim Mall's Cafe` Cafe`.

Nu, what's your favorite?