Suddenly remembering something really funny that happened in the past.The recollection is so vivid, that sometimes one can get hurt, in not paying attention to the present.
While stepping off a dock into a boat, a laughback could cause you to instead fall into the lake.
A lagback is that person in a group that manages to stay just far enough behind all the others, letting them do everything and then enjoys in the rewards after having never contributed.
The group of survivors fought they'reway thru many obstacles finally reaching safety and during the entire ordeal the lagback managed to evade direct exposure to danger.
Laughtalk: A combination of laughing and talking. While laughing, a personwill try to carry on a conversation. However, this attempt more that not fails, resulting in "laughtalk" or words unable to understand. "Laughtalking" usually results in more laughing due to the sheer humor of it.