Transitive has the right idea.
Pills contain waxes, binders and fillers aside from its active ingredients which in this case are hydrocodone and acetaminophen, which breaks down into toxic by products when combusted. Don't smoke pills.
Don't snort these either, the hydrocodone comprises less than 1% of the pill, the result is a nasal clogged with tylenol and pill binders that will drip down into your stomach anyways.