laffboat
When a group of brain-dead gamers in a game screams like a bunch of monkeys because something was funny and they're too dumb to say it normally.
"That dragon was a laffboat! I laughed so loud I scared my dog."
"I told my friend that joke was a laffboat. He laughed so hard he fell off his chair."
"My team got banned for being a laffboat. We laughed so much we didn't notice the raid was over."