Related:

• Lisp programmers do it deeper and deeper and deeper.
• Divers do it deeper.
• Scuba divers do it deeper.
• Tubas do it deeper.
• Miners do it deeper than divers.
• Submariners use their torpedoes.
• ping: [from the TCP/IP acronym `Packet INternet Groper', prob.
  originally contrived to match the submariners' term for a sonar pulse] n....
• Hunters go deeper into the bush.
• Landscapers plant it deeper.