Shmeep

Verb, noun.
From the protogermanic “schmiepen” derived from the ancient town of

Schmiepheim known for its unamused inhabitants.

US “Sh-meep” UK “Sh-maep”

To make a dismayed face with one head slightly tilted. Emphasis is given to the degree of flattening of the lips. Typically in one’s reaction to statements the family patriarch deems to be humorous.

His daughter politely gave the requisite laughter until one wise crack too many and then she shmeeped at him.