What is cup stacking?

[MN Dis Fans]

Ok its me again, the world's nerdiest mom. What is cup stacking? How do kids play this? Do you need special cups?

 

[Dream]

Check here:

http://www.speedstacks.com/home.htm

Its a FUN little sport! Both of my kids love it. Yes you do need special cups. That website will tell ya all ya wanna know....probably more!