The S.A.S.

Paddy the Englishman, Paddy the Irishman and Paddy the Scotsman
all apply to join the SAS and are called for interview.
Paddy the Englishman was first in to be greeted by two high
ranking officers.
"Paddy, we in the SAS are double-hard bastards", said one.
"In order to join, you too must prove you are a double-hard
bastard", said the other.
"We have organised a test. Through that door is your wife. On
the table beside where she is sitting is a revolver. Go in there
and shoot her", said the first one, not telling him that the gun
only fires blanks!
Paddy the Englishman immediately breaks down sobbing stating
that he cannot do it and so he fails the test.
Paddy the Scotsman is next and is given the same instructions
but after 5 mins in the other room he comes back in and declares
his undying love for his wife and so he too fails.
Paddy the Irishman is given the task also. He slowly stands up
and enters the other room. The two officers wait expectantly and
then BANG
BANG BANG BANG BANG BANG. 6 shots fired and then silence. The
silence lasts for a couple of moments and then there is an
unmerciful scuffle. The place gets trashed. After 5 minutes the
door opens and out walks Paddy, clothes torn to shreds, blood
everywhere.
"Jaysus but that fuckin gun was useless. I had to beat the bitch
to death with the chair!"