laffboat
A stupid and over-the-top way to show you think something is funny, usually used by the most idiotic players in a game called World of Warcraft.
"That spell was a laffboat! I laughed so hard I lost my connection to the game."
"I told my mom that joke was a laffboat. She asked what that meant. I don't know why I told her."
"My guild got kicked out of the dungeon because we were a laffboat. We were laughing so much we forgot to fight."