Why do cans of lager rattle after you drink it

Question

Why do cans of lager rattle after you drink it

Answer 1

there is a widget in the can .i think it stops it going flat or something

Answer 2

They have a widget in them, to keep it al nice and frothy. You can make them out of bottle caps as well. I guy I once made out with taught me this.

Answer 3

i have drunk 8 cans of carling lager today and not one of the cans have rattled, i am just starting on can number 9 and my wife is starting to get rattled  

Answer 4

Because of the Widget. It's a plastic thing inside. I remember the old adverts, was it for John Smiths?

Widget, I got a widget. I love you widget.

Did I dream that or was it really an advert?

Answer 5

either a widget or... you still have some lager in the bottom haha

Answer 6

some cans have a widget in them to keep the beer frothy. it is probably that. carefully cut open the can and it should look like a little white ball if it does it is a widget

Answer 7

Did you put the tab into it? If you did, that would rattle around in there.

Answer 8

when you open the can the widget drops to the bottom you won't hear it when your drinking because it floats when its empty you hear it it keeps it from goin flat

Answer 9

they don't?????

Answer 10

they have a widget in them

this explains

http://recipes.howstuffworks.com/questio...

Answer 11

some lagers have a widget in them

the first to use a widget was guinness in their draft cans to add a little gas and create a nice head, iff you open the can when its empty you will find a little white plastic ball (a widget)

Answer 12

That'll be ur tastebuds,they fall off into the can as u drink,lager burns them off!

Answer 13

it is a widget but not all cans have one...it depends on what you're drinking

Answer 14

they hav a widget