I recenlty bought a very cheap multimeter for $10. I switched the multimeter to ohms 2000k and stuck the probes on my tongue. The initial value was 400k and rapidly increased until it exceeded 2000k for which my multimeter cannot read. Then I dried the tip of my tongue completely and probed it again. Now the readings increase much slower and sometimes even drop at certain stages. My quesiton 1. Why is the resistance not constant? I read it should be stable at 50k 2. And why my otngue is dry why is the rate of resistance slower? Is something wrong with the MM?