meowing and kneading

Question
Why does my adult cat suddenly start meowing and then grabs a bit of my shirt with his teeth and starts a kneading motion white continuing to meow?

Answer
Andrea,

Is your cat neutered? If not, he needs to be done ASAP. If he is, then it's not anything to worry about and is normal.

His behavior is common with alot of neutered males. It usually starts when they are about 2-3 years old. It is a response that some cats have to sexual stimulation. Some cats have a strong 'male mentality' and though they physically can't do anything they mentally can. Usually the cause for this behavior is that the neutered cat smells a female in heat somewhere in the neighborhood (even if they are inside cats) and react to it. Sometimes though, a cat will get over-stimulated from a heavy petting session and also react in the same manner.

A common reaction is kneading and meowing, and/or biting something like they are biting a flea. I have one that does it too.  
I have also been told about neutered males that will hump or bite the neck of other cats in the family (male or female), dogs, people's legs and arms, and even stuffed animals.

When he does that don't get mad at him, scold him, or push him away, because it's nature and he doesn't understand what he is doing wrong. But also don't pet him because that can get him more stimulated. Try to distract him with food or toys. A pet laser light (from PetSmart, Petco, etc.) is an excellent distraction.

The behavior should stop when whatever is stimulating him stops.

I hope this helps.

Tabbi