The standard universal answer you give or are given when the following questions are asked:
How long you gonna be mate?
When is the food ready?
How far away are you?
How Long will this take?
Usually, 10 minutes is a gross
underestimate and can actuallly mean anywhere from
30 minutes to 4 hours
on the phone...:
Person 1:
How far away are you?
Person 2: O, only about 10 minutes?
Person 1: Cool
I'll see you there
Person 2 only just woke up
Angry diner: When is the food ready?! it's been 30 minutes already!!
Waitor: Yeh, in about 10 minutes?
Waitor tells the kitchen to start cooking