G-Bomb
When your Gmail thread gets so long it splits into a new one, like your inbox is a busy restaurant and the thread is the last table.
She said, "My thread got so long it split into a new one, that’s the G-Bomb."
He texted, "I got the G-Bomb and my inbox is now a food fight."
He posted, "My thread hit 100 messages, the G-Bomb just exploded."