[alaskayorkie]

My guy does the same thing when he's bored. I find when I exercise him more, he goes for the pants legs less.

You might also try giving him an alternative, a favorite chew toy or kong with peanut butter to occupy him at times like that. My suspicion is that he thinks the rise he gets out of you is great fun. Try having no reaction and just presenting him with the alternative.

Good luck.