Beautiful Gebroks story:
Lubavitch is EXTREMELY makpid on gebroks (aside from Acharon shel Pesach). Even children must eat their matzah in plastic bags, lest a crumb fall on the table. Many Lubavitchers remove all matzah from the table before bringing out the next courses. The Rebbe Rashab wouldn’t eat with a fork on Pesach, lest a matzah crumb remain stuck and become gebroks.
Once, by a Pesach seuda of the Frierdiker Rebbe (Rayatz), an uninformed guest began dipping his matzah in borscht. The chassidim were shocked and a commotion ensued.
The Frierdiker Rebbe commented: “It is better that the matzah become red (from borscht) than a Yid’s face redden in shame!”