So at work last night I was having a discussion with two female employees, apparently one just broke up with her boyfriend who according to her is a physicopath and is known to sit outside the work place in his car. The other female says that if he does this again she will taser him.

Now I'm pretty sure if you taser someone without probable cause its considered an attack? So say if you got tasered for no reason could you legally draw your firearm in defense of yourself?