If you're going to do what's forbidden, don't hold back but enjoy it to the fullest.
SOURCE: Bernstein, Jüdische Sprichwörter und Redensarten. Variations:
—till your beard drips. | —shoyn rinen iber der bord. | .שוין רינען איבער דער באָרד—
—till your lips drip. | —shoyn rinen iber di lipn. | .שוין רינען איבער די ליפּן—
SOURCES: Stutchkoff, Der Oytser fun der Yidisher Shprakh; Furman, Yidishe Shprikhverter un Rednsartn