When a particular excuse is so convincing that you could use it 3 times without it losing it's credibility.
Mom: Why is there porn in our internet history?

John: Sorry, mom, it was in a pop-up from another website.

Mom: Oh ok then.

Dad: Damn, son, that excuse wasn't just good. It was 3 good
by The Dark Blastwagon July 5, 2013
Get the 3 good mug.
This past weekend in Chicago I had a 3 way the good way with two exchange students from Sweden.
by Jack Burton October 3, 2004
Get the 3 way the good way mug.