You searched for: “taser
taser, taser, teaser
taser (TAY zuhr) (noun)
1. A trademark name used for a high-voltage stun gun: "Whenever a stun gun is used by anyone, it is referred to as a taser which will taser a person; so, the term functions as a noun and a verb."
2. An electroshock weapon that uses electrical current to disrupt voluntary control of muscles: "The stun gun manufacturer, Taser International, calls the effects of a taser a neuromuscular incapacitation."
taser (TAY zuhr) (verb)
To shock someone by using a high voltage stun gun: "The police report noted that the officers had to taser the violent man who was acting in a dangerous manner."
teaser (TEE zuhr) (noun)
1. An advertisement that attracts customers by offering something extra or free: "We saw the teaser that offered to make people a special deal if they signed up for a new credit card."
2. An attention-getting vignette or highlight presented before the start of a television show or at the end of a movie: "A teaser for the sequel appeared at the end of the movie."
3. Someone who harasses another person playfully or maliciously; especially by ridicule and by provoking with persistent annoyances: "The husband was a teaser of his wife about her preference of classical music."

A taser certainly is far from being any kind of a teaser.