The engineer gets himself a beer and then looks at the Bush look-a-like and says, "You look just like George W Bush!"
The man turns to him and says, "Well son, that's because I am George W Bush."
The engineer exclaims, "No way! That's so cool! Can I buy you a beer?"
Bush replies, "Sure! While you're at it, can you also get one for my buddy here, Tony Blair?" and nods at former British Prime Minister Tony Blair who's sitting next to him.
"For sure!" The engineer says, and orders the beers.
After the beers arrive and they say "Cheers!" the engineer asks Bush, "I'm just curious, what do two former world leaders like you two talk about over beers?"
Bush looks at the engineer and says, "Well, right now we were just talking about how World War Three would go down."
The engineer says, "Really? Wow. So how would it go?"
Bush said, "Well, for starters we'd kill a few million Arabs and an engineer."
The engineer looks surprised and asks, "But why an engineer?"
Bush then turns to Blair, pats him on the back and says, "See Tony? I told you, no one will ask about the Arabs!"