Leonard and Penny - Back To December

I've been making this सूची over the past four months या so. Far और of these apply to me than I care to mention.

Oh, and one और thing. I understand that a few are opinion based and that my opinion may differ from others'.

You know आप are obsessed and consumed द्वारा The Big Bang Theory when…
    You play “Rock-Paper-Scissors-Lizard-Spock” to resolve disputes.
    You do three knock cadences when summoning someone.
    You know all the words to “Soft Kitty.”
    You have sung the aforementioned song...