When two of your exes begin dating each other. Famous for originally happening to Mako in the Legend of Korra, as well as Finn in Adventure Time.
Finn: Princess Bubblegum and Marceline just started going out.
Jake: You're totally getting Mako'd!
When a person dates or marries their sibling's ex. Usually used with the term "pulled a."
Nota Bene: The sibling is the one who pulls a Frankie Carmine, not the ex.
Other terms:
Triple Frankie Carmine: When a third sibling dates or marries the same ex.
Frankgay Carmine: When one sibling is male and the other is female.
Brother 1: Hey, your new girlfriend is pretty hot!
Brother 2: Don't pull a Frankie Carmine on me!
The empty gesture of offering a sum of money to cover a bill which is not even close to the total.
I took my friend out for an $800 dinner and he only offered me $100 for the bill. What a Paulie Poolside!
Going out to eat with someone, feigning illness, and leaving before the check comes.
I went on a date with this guy last night, but he did totally pull a Jay.