"Wow, Rebbi really went Beis Shammai on Yitzy and threw him out of shiur."

"You better wear a white shirt to shul or I'll pull a Beis Shammai on you."

"Beit Shammai said that one cannot relinquish the opportunity to do so and must even go back if he left, which is valuable for the spiritually advanced." (source)

"While for me, drunk driving is just a bad thing to do, many others had personal experiences with misbehavior and loss in their communities and wanted to be as strict as Beit Shammai ever was." (source)