Not so much shat myself but a shitting at work story.
We were working in a city center shop which due to it being refitted had no toilet on the day we were there
So desperate to park the night befores curry my mate suggested i go to Mcdonalds and use their bog so off I trotted only to find them closed for cleaning
Clenched the butts up and waddled back still very desperate and had an idea do it in a bucket in the back of my van parked outside .
So popped some brow paper in the bucket and emptied into it the stink was pretty bad so wrapped it up with tape and popped it in a litter bin outside the shop .
Anyways while we were having a brew and watching the folks go past along comes a tramp picking up ciggies and he goes for a look in the bin only to remove my parcel and pop it into his carrier bag and amble off 8O