The Tap on the shoulder:
A bloke hails a cab , tells the cabbie where he wants to go .
They are driving along & the bloke leans forward and taps the cabbie on the
shoulder . The cabbie screams , mounts the footpath , nearly hits a bus &
stops just before he is about to hit a semi .
The bloke says sorry mate , I did not mean to scare you .
No , it's my fault says the cabbie , you see this is my 1st day as a cabbie .
I drove a hearse for 30years.
Zoomer

good one so simple but funny