Office dares once again....

At the end of a meeting, suggest that, for once, it would be nice to conclude with the singing of the national anthem

Walk into a very busy person's office and while they watch you with growing irritation, turn the light switch on/off 10 times.

For an hour, refer to everyone you speak to as "Bob".

Shout random numbers while someone is counting.

During the course of a meeting, slowly edge your chair towards the door.