It is important that you take a pen with you so you don't become a yo yo!
All about the Yo yo.
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The first historical document featuring a yo-yo-like device was in Greece dated to 500 BC, and so some historians argue that the Greeks invented the yo-yo. These feature Greek discs which are arguably similar to a yo-yo which can be seen in Greek museums, such as the museum of Athens. Some historians argue that these were used for spools for thread or hanging drapes due to the fact the discs were ceramic which could break during play. There is, however, a painting found on a Greek vase with what appears to be a boy playing with a yo-yo, that may support the use of these discs as play.
Some historians believe the yo-yo originated in China in approximately 1000 BC. Although there are no formal records of the yo-yo, there is proof that the diabolo, a toy that is part-yoyo, part-top was developed in China around this time..
Have fun, remember to be safe!