An exceptionally poor boxer, one who is often paired with a much better boxer so as to improve the latter's statistics and win percentages. The up-and-coming star boxer suffered a huge upset last night at the hands of a tomato can who everyone expected to lose.

A negligible, trivial, or unimportant difference, distinction, or correction. (Refers to the American pronunciation of tomato as "tomayto," compared with the British pronunciation of "tomahto." Specifically, it is an allusion to a verse in the song "Let's Call the Whole Thing Off": "You like potayto, I like potahto; you like tomayto, I like tomahto; potayto, potahto, tomayto, tomahto, let's call the whole thing off!") A: "Well, technically, the Hindenburg was a rigid airship, not a blimp." B: "Eh, tomayto, tomahto, who cares?"