Faking!!!
There are some who are sooooo ticklish that they scream!
And sometimes a scream is the first reaction then it becomes laughter.
But a good way to fake being ticklish in a video is to scream
But come on man, there are plenty of good laughers and companies that provide laughter
There are more producers now, and more models lookingto make money.
I've talked with some models that are tickle fetish stars and get great response here on the TMF and they tell me they fake it all! That they aren't ticklish at all, but that they can fake laugh and scream a lot. I'm not going to list names and bust some people's fantasies. Some companies hire the name not the ticklishness.
I myself thank these models and pass on working with them, but some companies hire them over and over. Thus leading to fake laughter and screaming to fill in the lack of laughing.
One more point, screaming could be due to the lack of tickling skills of the tickler.
-some videos have the tickler dig in right away with hard painful tickling that would make me scream in pain too, lol
-some don't tickle enough to produce laughter, like they are worried about tickling too intensely- but this is off point
I get lots of responses telling me to tickle the model more intensely or that it would have been better if I would have tickled them hard the whole video. So there are some who enjoy the screaming stuff too. Producers try to to do what their costumers want.
My advice is to search for laughing clips thru previews and to stick with models that laugh a lot. Find some producers that cater to those who may have a laughter fetish or who work with ticklish models.
I got into doing vids do to a lack of laughing in videos, fake laughter, and bad ticklers.
Some producers here have told me that they are doing vids for the same reason.
So it might take some searching but there is some good stuff out there.
Good luck my friend!