A character rates something on a scale from one to ten, often for comedic effect.
The results split into two types:
An actual number. It's sometimes oddly specific or, more often, doesn't fit the scale (as in, more than ten or less than one).
Not even a number, or left unanswered for rhetorical reasons.
See also Up to Eleven, which is named after an example this, Top Ten List, for other things [...] [tvtropes.org]