Facebook Friend Request Purgatory

the act of neither confirming nor ignoring friend requests of those that I full well know and remember, but who have thrown me even the SLIGHTEST bit of shade in the past. I instead leave them to linger for days, weeks and sometimes a full month in 'friend request purgatory'--for punishment... and purification--before finally accepting their requests and welcoming them into "heaven" (i.e. my friend list)