you can easily buy the parts required to make one.

I see none. This post has been up for 3 weeks.

It means the tab is muted and can't play audio

you can unmute it by rightclicking the tab and clicking the unmute button

Whoever flagged this for “communicating a threat”, it’s not. It’s a reference to some video with master chief and an anime femboy where master chief says “If a furry can afford a 2000 dollar fursuit, they can afford a 10 dollar pipebomb in your mailbox”. Probably not the exact quote but that’s what I remember of it.

Please post the link in comments