Wiktionary
puckers up
vb. (en-third-person singular of: pucker up)
Usage examples of "puckers up".
He keeps trying to raise one eyebrow, but he can't control the muscles, so they both go up, and his blue eyes twinkle, and his mouth puckers up like a cherub's.
My late husband's solicitor thinks it barbaricoh, he is too polite to say as much, but I can see it in the way his face puckers up like a prune whenever he steps through the front door.
Her face puckers up like one of those dolls made out of dried apples, and she starts to cry.