Watch out for this granny.

Largo Police have arrested Rosa Tyrka, 59, who they say used a stun gun to rob businesses in Pinellas County.

She told clerks she needed money to feed her starving grandchildren.

She allegedly tried to rob Loretta Rose, an employee of a Subway store in Pinellas Park.

"She grabbed my hand and put the stun gun to my arm and says, 'I don't want to do this. This is so much electricity. I feel bad doing this but I have three starving grandchildren,'" Rose said. "And I ripped my arm away from her and I ran in the back."

Another employee called 911.

Dispatcher: "911. What is your emergency?"
Caller: "Um, we have a lady trying to tase us!"
Dispatcher: "Why is she doing that?"
Caller: "Because she said she has starving grandchildren."

Rose said she armed herself with a butter knife and chased the woman away.

Cops said a few hours before the attempted Subway robbery an older woman armed with a stun gun came into a Shell gas station in Largo and zapped a clerk with a stun gun.

The grandmother didn't get any cash from the Subway -- she didn't even get the sandwich she ordered -- but did get money from the gas station clerk and shocked him anyway.

Photo: Rose Tyrka has been arrested for allegedly using a stun gun to rob businesses.
baynews9.