Two Social Risks of Being an English Teacher:

1.) Accidentally using your "teacher voice" with friends, or giving someone a "teacher look" rather than laughing or rolling your eyes when he or she is being an idiot. 

2.) Having the "Red Pen Itch" -- this is the name I have given to the insatiable urge to correct bad writing, wherever it may appear. Perfect example from Failblog.org: 

see more Epic Fails

Now of course the "You" of this conversation was also making red-pen-worthy mistakes (ex: misspelling "sentence"), but the point was made. It's Darwinian -- if you have deplorable writing skills, you are less likely to mingle your gene pool with someone who notices. 

We could get into a big debate over "code switching" for writing online, but I'm just aiming for the humor factor here.