Do not cross an angry, frustrated and tired climber.

When you are in an indoor climbing gym, you will see a lot of coloured plastic rocks on the wall. Each colour actually represents a route that is prepared by experts. In short, when you climb a particular route, you can only use rocks of the same colour for your hand-holds and foot-holds.

When you are finishing a route (on toprope), the unofficial guideline is that you must hold the last rock with both your hands. That can be a bit leceh, so most climbers just hold the last rock with one hand. In some cases where the route is particularly tiring, we'll just briefly touch the last rock and call it a day. In short, you normally do something (touch, grab, breathe on, molest, etc) to the last rock of a route to signify that you sucessfully completed the route.

Today, Dailytoe created a new rule:

At the climbing gym, on a particularly difficult route:
Toe: (shouting at Frou the belayer) OK I AM DONE! LET ME DOWN.
Frou: But there is one last rock above you.
Toe: Whaattt?
Frou: You haven't touch last rock!!
Toe: (angrily) I CAN SEE IT ALREADY WHAT! IN FACT, I AM AT EYE-LEVEL WITH IT! WHAT ELSE DO YOU WANT ME TO DO? YOU WANT ME TO KNIT ON IT? YOU WANT ME TO KNIT IT A SWEATER TO KEEP IT WARM DURING THE COLD LONELY NIGHT? HUH? HUH? HUH?

New rule: If you can see it, it's already done.