Quote from Mike in The One Where Rachel's Sister Babysits
Phoebe: But just so you know- However and whenever you decide to propose, I promise I'll say yes. Whether, you know, it's at a basketball game or in skywriting or, you know, like some lame guy in a cheesy movie who hides it in the cake. It's in the cake, isn't it? Mike: Where else would lame Mr. No Balls hide it?