i am on vacation until Friday

[sullysim60]

my wife and l have a bet. If one says i am on vacation until Friday, does that mean I am off Friday or working Fri?
thanks
John

 

[emsr2d2]

My wife and l have a bet. If one says "I am on vacation until Friday", does that mean I am off or working on Friday? or working Fri?

Thanks.

John Unnecessary. We just go by usernames here.

In all honesty, it's a bit ambiguous. The speaker could be including Friday or not.