I was having a laugh on omegle with my mates as you do. And then I was talking to this lass and then near the end a (supposive)police said I was I pedo. Then after I said I was only 13 and I would not do it again. They said they are in Texas yet I am in england and they said they would contact my parents.is this possible??
And do you think they are just lying??

Not likely. If they were Texas police they would not have told you who they were.

Instead, figuring you to be an adult, they would have had the "lass" set up a face-to-face with you and then, if you were a pedophile, local cops woud have arrested you.

Someone is pulling your leg.