MehFace

From IckyWiki

Meh Face

Used to describe the face made by a pet when they are dubious of or actively turning down something we thought they'd want.

Origin: our old poodle Peanut used to make this face when he didn't want food...you'd put it near his (myopic face) and he'd back off, wrinkling up his snout and sticking his tongue in and out as if to remove a bad taste.

Usage: "What are you making 'meh face' for? This is beef!"