When asked how I am:
"Better than some - not as good as others."
Borrowed from the 90's Nickelodeon cartoon Rugrats:
"As Bob is my witless..."
When reminded that "There is no "I" in team", I have been known to respond:
"But there is in "Idiot". (Teams tend to leave me alone ...)
And from a Canadian friend of mine, used when concluding a set of instructions:
"First you do A then B and then Bob's Your Uncle." I have no clue what it means but I use it anyway.
About people who have an inflated idea of how smart, good looking, or hard working they are (usually all three): I'd like to buy that boy for what he's worth and sell him for what he thinks he is worth.
And in response to whiners that complain about something not being "fair": Fair is my least favorite 4-letter F word.