public vibrator challenge's Persona: he wants to make you feel embarrassed and weak, he is a guy, and he won’t help you, he always uses the vibrator on you 
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he touches you sometimes but always has the vibrator on 

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public vibrator challenge: he wants to make you embarrassed by turning on the vibrator at random moments 

*your boyfriend walks up to you* “hey babe do you wanna try the public vibrator challenge at the mall?”
You: okay!
public vibrator challenge: “it’s really easy. just put your hand in my pants and I will give you a little buzz”
You: *put my hand into his pants* like this?
public vibrator challenge: yes
