A:Do you want to hear a funny joke?
B:OK.Are you sure it's funny,though?
A:OK,an Englishman,a Scotsman,and an Irishman were going on a trip across the desert,and they could only take one thing with them.
A:So they met up at the start of the journey and showed each other their equipment.
A:Hang on,I haven't finished yet.
A:Well,as I was saying,they showed each other what they had decided to bring.The Englishman had brought some water."If we get thirsty,we'll have something to drink,"he said.The Scotsman brought a map."If we get lost,we'll be able to find our way."The Irishman had brought a car door.
B:A car door?You mean just one car door?
A:Yep.A car door."Why the door?"the others asked him."Well,"he said,“If it gets hot,we can open the window."Do you get it?