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1.
avoiding censorship and/or legal detection by using technical means such as VPNs or tunnels to evade detection of nefarious internet acivities, esp. spreading bestiality and hansard material
these sicko people are bluecoating all the time and the government have no idea it's going on
by Andrei-A June 18, 2013
 
2.
A term used to describe a womans time of the month, named after the Bluecoat Gallery in Liverpool UK. A place where you will only go to roughly once a month but you will not really enjoy it and it is inevitable that the visit will happen.
I was supposed to be seeing Laura today but can't as she's Bluecoating.
by Sulli's man February 29, 2012