I enjoy a good ha-ha now and again
When your stomach rolls
Tears come out of your eyes
You and the other person
Exchange knowing glances
And the mayhem continues
These are good times
Great times
As the soberness
Expands to silliness
The silliness breaks down to
simple insanity
The greatest joy two people
Can have
A guffaw, a chuckle,
Grows to a howl and a whoop
Side splitting, roll in the aisles
Rip-Roaring Funny
Excellent! You really have broken down the different stages of laughter quite nicely .