This is really fun
Here's an example.
Dude1: Can you eat 3 sandwiches in one minute?
Dude2: Yup, but usually it depends on the size.
Can you do 20 flips on a trampoline in one minute?
Dude3: No!!! It's too hard!
Can you...
So the idea is hat the first person says something that 'Can you do ... in one minute?' So she / he asks can you do something in one minute, and the next person says yes or no and the next can you do something in a minute. Understood this?