Ooops
Be kind this is my first post.
I cleared an American P3 to land one day with instructions to "use first taxiway"
I forgot to tell them to travel to end of runway and make 180 turn.
There was a cloud of smoke and screeching tyres as she stopped the plane in 150 metres and exited the first taxiway.
Cost me much alcohol that evening in the Clubhouse.
Cheers