Nervous Poo
Having to take a poo before completing a task, such as your SAT's or flying solo in an aeroplane for the first time.
Adam : "Hey man ready for your first flight, alone?"
Tiemo : "Sure am, ahh first i think i'll go take a nervous poo before i go up."
Tiemo : "Sure am, ahh first i think i'll go take a nervous poo before i go up."