A Bieber Dam is when a large horde of Justin Bieber fans block entrys, doors, halls, roads etc. similiar to a beaver dam.
John: Hey I think Justin Bieber's signing autographs in the mall food court today
Sam: Ya he is, did you see the size of that Bieber dam? no one can get through to the other side of the mall.
Sam: Ya he is, did you see the size of that Bieber dam? no one can get through to the other side of the mall.
by yigs94 October 23, 2011
Get the Bieber Dammug. The equivalent of a Rick Roll on YouTube, but with a Justin Bieber video, instead of Rick Astley.
Can also happen on torrent when you think you are downloading a James Bond movie called "Never Say Never" and then find out it's a Justin Bieber movie.
Can also happen on torrent when you think you are downloading a James Bond movie called "Never Say Never" and then find out it's a Justin Bieber movie.
by Vapor S. Thompson March 14, 2011
Get the Bieber Dammedmug.