Yiddish: He should laugh with lizards.

SOURCE: Stutchkoff, Der Oytser fun der Yidisher Shprakh.  To laugh with lizards means to laugh on the outside while crying on the inside, or to laugh out of bitterness rather than joy. Compare:

Lakhn zol er mit blut un mit eyter.  |  .לֹאַכן זאָל ער מיט בלוט און מיט אייטער
He should laugh with blood and pus.

SOURCE: Stutchkoff, Der Oytser fun der Yidisher Shprakh

לאַכן זאָל ער מיט יאַשטשערקעס.

Lakhn zol er mit yashtsherkes.

He should laugh with lizards.