punim.

According to bubbygram.com 's Yiddish dictionary:

A "shana punim" is a pretty or beautiful face. A "lichtikeh punim" is a happy, "lit up" face. A"zeiseh punim" is a "sweet face." Usually these expressions are accompanied by much cheek-pinching by elder relatives. A"mieseh punim" is an "ugly face." A "farbissenah punim" is a "sour face."

Farbissenah punim:

Shana punim:

Zeiseh punim:

Lichtikeh punim:

Now don't you just want to pinch those cheeks!!