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1.
The act of making yourself laugh when either no one is around, or no one else is laughing with you.
"Justin needs to cut back on his laughterbation habits, its starting to become a problem."
автор: CheetullBro 28 августа 2008
 
2.
The act of laughing until you bust a nut.
Jim: "So I watched Grandma's Boy the other day and laughed so hard that I came."

Bob: "Ah nothing like a good ol' evening of laughterbation"
автор: lucraine 25 июля 2010
 
3.
When on cracks oneself up. Makes oneself laugh. Tells jokes for themselves.
Laughterbation has become on of Gretchen's favorite past times. Sometimes, on Saturday nights, she stays home imaging funny things she might post on Facebook, and just cracking herself up.
автор: Victorygardener 7 сентября 2014
 
4.
to laugh while you masterbate
the picture was so hot and funny laughterbation was the only thing i could do
автор: parry henis 12 октября 2007