Blue tube that vibrates when you turn it on. It doesn't seem to be a sex toy

Here are some pictures (the company name is Chadwick) http://imgur.com/a/F1xOf#2

It takes C batteries. I removed the top mechanism from the tube and it looks like this: http://imgur.com/a/L5EsA#0

Finally, I removed the motor from the plastic covering and it looks like this: http://i.imgur.com/9a6iX.jpg