A way of getting high using a glass bottle(like milk), popping the bottom off, then getting two knifes red hot, sandwiching the dope in between the two and putting it under the bottomless bottle, and inhaling.
I don't buy the schmegegge about Morty sleeping with Moira.
His version of the story was pure schmegegge.
The whole schmegegge was made up to get Liz a little bit of attention.