Really? I've never tried that. The YouTube experts say it might cause them to release more juices/saliva into you. I'm always a little sceptical of their fear mongering & risk aversion though. I like that when you pull the tick, you also have it secured in the tweezers. Burning the bastard quickly after removing provides a little retribution comfort.

We always just used the metal of a lighter that we held on for a bit.