ALWAYS.

If someone says they don't find (insert generally accepted dime piece here) attractive, it will always generate the following replies:

1. EVERYONE HAS SUCH HIGH STANDARDS OF BEAUTY. This is usually accompanied by the "BUT IN REAL LIFE THEY'D FUCK ANYTHING THAT MOVES!"

2. Just plain old WHAT? YOU CRAZY!

3. The obvious "that's just your opinion" nonsense

Off top I've seen it in PTP regarding the blonde from Glee and Kelly McGillis.

This will always generates a handful of those dumbass responses.