Joe Pyne was a confrontational talk show host and amputee, which I say for reasons that will become clear. For reasons that will never become clear, he actually thought it was a good idea to get into a zing-fight with Frank Zappa, his guest of the day. As soon as Zappa had been seated, the following exchange took place:

Pyne: I guess your long hair makes you a girl.

Zappa: I guess your wooden leg makes you a table.

Of course this would imply that Pyne is not a featherless biped.

Source: Robert Cialdini's Influence: The Psychology of Persuasion