First we had snakes on a plane and now a scorpion. 

On a United Airlines flight from Chicago to Vermont, David Sullivan was stung twice by a stow-away scorpion. 

"My right leg felt like it was asleep, but that was isolated to one spot, and it felt like it was being jabbed with a sharp piece of plastic or something."

The second sting came after the plane had landed and the Sullivans were waiting for their bags at the luggage carousel. Sullivan rolled up his cuff to investigate, and the scorpion fell out.

"It felt like a shock, a tingly thing. Someone screamed, 'It's a scorpion,"' Sullivan recalled. Another passenger stepped on the two-inch arachnid, and someone suggested Sullivan seek medical help.

He scooped up the scorpion and headed to the hospital in Burlington. His wife stopped at the United counter and was told the plane they were on had flown from Houston to Chicago. The Sullivans surmised the scorpion boarded in Texas.

You would think after the first bite he would've noticed the scorpion.