Question about BO one

[Christian Kane]

My friend wanted to hit my bo, but he accidentaly hit from the bottom. I took it from him as soon as it was in his mouth but I heard the bo turn on. Will this thing blow up or is it still safe to hit

 

[dansus]

Its fine. Theres a little breather hole at the bottom, you can activate the vacuum switch by sucking from the wrong end.