Something that happens to Jews that are shomer Shabbat. Essentially, what happens is that because they can’t turn on/off lights on Shabbat, they become very hesitant of doing so during the week, and begin to always hesitate before flipping a light switch
Joseph: **reaches for light switch, then hesitates, then flips it**

Mendel: Why’d you just hesitate to turn on the lights?

Joseph: It’s the Shabbat effect.
by 809 May 6, 2019
Get the The Shabbat Effect mug.