[Egon stabs the fork directly through the cake, still pointedly avoiding meeting Venkman's (or Ray's) eyes.]

I don't see what else there is to speak on the matter. We tested the slime for emotional reactions, and were able to draw a conclusion on its psychokinetic make up.

[He starts picking apart the cake without bothering to even eat it.]

And what about the chicken man? How exactly was he able to make a deal with a demon in the first place?