[ Useless Lab Project #1 ]
If someone annoys you, give him the yellow card.
If you want to kick someone out, give him the red card.
It's strong and simple communication tool.
When you shake your card, it whistles.
9Apps 4.9
![Yellowcard - Keeper [Live @ AOL] screenshot 5](https://i.ytimg.com/vi/ztO7GcTnacs/mqdefault.jpg)
