Richard Nixed for Bad Pun

As a young man, Richard Nixon captained a small, oar-powered whaling vessel.  On one particular day, spotting a whale off the starboard bow (where else?), he called for the weapon. “Spear!” He said.  Then, as levitation began to get away, he called to the oarsmen for more speed.  “Row!” He said.  Then, being distracted by a cloud that looked like a wildebeest, he pointed, and prophetically yelled, “A Gnu!”