Comment Anxiety
A feeling of sheer dread one gets when he/she suddenly thinks they may have messed up on that previous comment, especially around people who tear freinds limb from limb at the sight of bad grammer.
Bill's Comment: "Your so awesome" Oh crap i hope i did that right... I've got Comment Anxiety.. Im freaking out!

Everyone on Bills Freinds List; "It's YOU'RE you douchenugget!"