Leave like Crisco
Meeting someone for the first time and thinking so little of them that you leave without saying goodbye.
A: Oh do you know where Joe went? I wanted to say goodbye before I leave.
B: Oh I think he already left.
A: Ah yes, it's so like him to leave like Crisco.
B: Oh I think he already left.
A: Ah yes, it's so like him to leave like Crisco.