Cuckoo banana face

Emeth, going fullcuckoo banana face
(also with a cuckoo visiting his shoulder).

Emeth's favoured pejorative these days, which he applies liberally to all sorts of people, situations, and things, is: cuckoo banana face.

I just think this should be recorded for posterity.

As a clueless old guy, clearly out of touch with life (a cuckoo banana face, one might say), I'm not exactly sure what a cuckoo banana face is, but I'm imaging it's something like the cuckoo banana face pictured here...