bollocks to granny
"Would a traffic policeman in the UK used his truncheon ?"
Only if she were a protestor who had Max Clifford as a media rep and there were cameras there to take the photos.
Also, I agree with one of the other ACs: "Since "TASER" is a proper noun and trademark, removing a letter is not appropriate ... So, "to TASER" would be most correct."
A taser is an item, a name (and therefore the word is a noun), so the infinitive would be "to taser". Conjugations would be:
I taser
You taser
He/She/it tasers
Past participle: tasered
Gerund: tasering
If it weren't for some grubby 21-yr-old undergrad with poor English, we wouldn't even be having this discussion. (http://en.wikipedia.org/wiki/University_of_Florida_Taser_incident)