we just discussed this in IRC -
According to the sex toy quiz at
www.mypleasure.com.. one of their questions was:
4. What's the difference between a vibrator and a dildo?
A.) Dildos are phallic shaped, and vibrators are not
B.) A vibrator is a sex toy that vibrates, and a dildo does not
C.) Dildos are made from silicone or other softer materials
D.) There is no difference: "vibrator" is another name for a dildo
Spoiler:
The correct answer is B
Dildos are made in a multitude of shapes and from a variety of different materials. The main difference between a dildo and vibrator is the "buzz" -- vibrators vibrate and dildos do not.