What a classic username for this forum. I know exactley what you mean and during times where I feel like I'm shedding I'm more eager to test my hair. I do stupid stuff like comb it over a table, or massage my scalp over a table and count the hairs that fall out. In the past I used to plug my kitchen sink then stick my head under the tap water for about the minute and afterwards count the hairs in the sink. It's a very obsessive behavior and usually it never ends well.
Although I never try to pull hairs out, don't do that. When I get obsessive I just fluff my hands gently over my balding areas, but never actually pull them, it's not a good idea.