They always fall toward the person using the tazer. The tazor causes the muscles to violently contract around the area of impact. This invariably causes the person to fall into you. This is perfectly acceptable where your on your feet jabbing the tazer into the person. If you attempt to taze someone while passing by on a bicycle they will violently slam them selfs into you and your bicycle.

Being a dirty old man I much prefer the buzz and pat method. This is only used for females with less than 5% body fat and an apparent age of 25 or less. Simply slow to a speed that allows you to pat them in a rear area as you buzz pass but not so slow that they could slap you knocking you off the bike in the process, unless you prefer pain with your groping.
!Just kidding!