Office work dull?  None of your colleagues appreciate your humor?
Amuse yourself.  Points are awarded on a degree of difficulty basis.
You ca award yourself extra points for creative execution.

 ONE-POINT GAGS

Run one lap around the office at top speed

Groan out loud in the bathroom cubicle (at least one other 'non-player'
must be in the bathroom at the time)

Ignore the first five people who say 'good morning' to you

Phone someone in the office you barely know, leave your name and say
"Just called to say I can't talk right now. Bye"

To signal the end of a conversation, clamp your hands over your ears
and grimace.

When someone hands you a piece of paper, finger it, and  whisper
huskily, "Mmmmmmm, that feels soooooo good!"

Leave your zipper open for one hour. If anyone points it out, say,
"Sorry, I really prefer it this way"

Walk sideways to the photocopier.

While riding an elevator, gasp dramatically every time the doors
open.


 THREE-POINT GAGS

Say to your boss, "I like your style" and shoot him with
double-barrelled fingers

Babble incoherently at a fellow employee then ask "Did you get all
that, I don't want to have to repeat it

Page yourself over the intercom (do not disguise your voice)

Kneel in front of the water cooler and drink directly from the nozzle
(there must be a 'non-player' within sight).

Shout random numbers while someone is counting.


FIVE POINT GAGS

At the end of a meeting, suggest that, for once, it would be nice to
conclude with the singing of the national anthem (extra points if 
you actually launch into it yourself).

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'.

Announce to everyone in a meeting that you "really have to go do
number two".

After every sentence, say 'mon' in a really bad Jamacian  accent.  As
in, "the report's on your desk, mon".  Keep this up for 1 hr.

While an office mate is out, move their chair into the elevator.

In a meeting or crowded situation, slap your forehead repeatedly and
mutter, "Shut up, damm it, all of you just shut up!"

At lunchtime, get down on your knees and announce "As God is my
witness, I'll never go hungry again".

In a colleagues planner, write in 10am: "See how I look in tights".

Carry your keyboard over to your colleague and ask "You wanna trade?"

Repeat the following conversation 10 times to the same person: "Do
you hear that?"  "What?" "Never mind, it's gone now"

Come to work in army fatigues and when asked why, say, "I can't talk
about it"

Posing as a maitre d', call a colleague and tell him he's won a lunch
for four at a local resturant. Let them go.

Speak with an accent (French, German, Porky Pig, etc) during a very
important conference call.

Find the vacuum and start vacuuming around your desk.

Hang a two-foot long piece of toilet roll from the back of your pants
and act genuinely surprised when someone points it out.

Rollerblade around the floor throwing sweets.