what does it mean when subs play/work off eachother(if that is what it is even called)? I understand that it usually happens when they are close, but how do i know if its happening to me? how close can they be together without "playing" eachother? and what can i do to prevent it?//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif
