attention blocking

when somebody blocks you, then unblocks you, and then blocks you, and so on very rapidly so that the right side of your screen fills up with 'Scabby is Online' 'Scabby is Offline' 'Scabby is Online' etc.

often used by attention-seeking losers who want to make it very apparent that you know that they don't want to talk to them. of course, they are such idiots that they don't realise that this undermines the entire basis and point of blocking somebody.