The expulsion of faeces in any environment other than a locked and secured toilet/bathroom.
N.B: this includes shitting with the toilet door open but does not include soiling oneself in public.
Camper A; "I just had a brilliant liberty turd next to that pine tree."
Camper B; "Did you have toilet roll with you or did you go 'au naturel'?"
Camper A; "Luckily I had a pack of hand tissues in my jacket pocket."
Camper B "Sweet."
Son; "Dad, let me know how long you and Mum are going to be out for so I can have a shit with the door open."
Dad; "Ah the old liberty turd, will do Son."