Any flavored cigarettes/cigars, including cloves. In the same way that people who want to get drunk but can't drink real alcohol drink Smirnoff, people who want nicotine but can't handle real cigarettes smoke cloves/flavored cigs.
I heard that Jeb is a Butt Smoker. His favorite sex act is to take two puffs off a Camel Light and blow it up his poo-partner's ass. Now that's fucking sick.