Hamburger's jokes range from variations of "Why did the chicken cross the road?" to celebrity targets, such as Michael Jackson, Paris Hilton and Diana, Princess of Wales, to jokes about his ex-wife. His pacing is off, and he clears his throat nonstop through his entire routine, which has caused critics to tag him as "the world's 'worst' stand-up comedian". Neil's unique brand of comedy, much of it anti-humor, has thrilled, perplexed and repulsed audiences from the New York University Thompson Center to Jimmy Kimmel and is often compared to Tony Clifton, though the acts are very different. One of Neil's best loved gags is the "Zipper Lips," in which he asks an audience member a question. If the audience member doesn't respond, Hamburger produces a verbal stoush that produces his Zipper Schtick. A common phrase used by the comedian is, "But, that's my life!"
