Yes, and there are people who have contests with them.
The yo-yo is a skill toy that consists of two cylindrical halves, an axle and a string. The yo -yo was invented in 1928, but did become popular until the 1970's and 1980's.
1920's
The 1980's
yoyos have always been popular but the big BIG boom was in 1998
i believe that yoyos eat dog poo
yes They do sell Yoyos
Dr. John Meisenheimer has an estimated 10,000 yo-yos. and the worlds biggest.
yes
no
alot
of course there a Chinese yoyos in japanica, silly :P china and japanica are like this (crossed fingers)
metal
The 3 types of yoyos are: the classic shape the modified shape(moth shape) the butterfly shape
YOYOS