Paddy is walking down the high street when he sees an open bag on the floor. Being a good citizen and aware of recent terrorist activity he takes a careful look inside. He sees a sandwich in an un-opened wrapper with wires coming out of it. Immediately he is suspicious and wonders what to do.
He calls the Police on his mobile phone. He explains that he has found a suspicious package that has a sandwich inside and wires coming out of it.
The operator asks him if it is ticking.
Paddy replies "No but i think it is beef!!!!!"

Groan!

hmm???

I don't get it?

What is the clue?

Well, I like daft ones.

I didn't get it either but the wife says the clue is
Ticking is really tikken is really chicken.

well i'n n.irish and didn't get it until omega 24 v6 told us what his wife said

Police in Dublin have just released a statement following a terrorist attack in the train station. 36 people have been found stuck to the walls and ceiling, apparently this is the first instance of a 'no more nails bomb'