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1.
The sound you make when you go to sit down but the chair is farther away from your ass than you anticipated, or not even there, so you do a full falling spasm.
Person 1: 'Oh look, a chair.'

*Starts to sit down*

*Person 2 pulls the chair away*

Person 1: 'TISPT.' *falls over*

Person 2: 'Ahahahahaha.'
by Cheesyla October 30, 2011