The men of The Big Bang Theory do their thing in this shot from the sitcom. It's courtesy of the episode "The Shiny Trinket Maneuver."
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The Big Bang Theory Season 5 Episode 12 Quotes

I mean, even Donkey Kong had Donkey Kong, Jr., so he could teach someone how to kidnap princesses and throw barrels at Italian plumbers

Howard

Sheldon: Oh, I see why you're confused. No, her news sounded important, but what your forgetting is it was an achievement in the field of biology. That's all about yucky, squishy things.
Penny: Honey, she's upset. You're her boyfriend. You have to at least try to be excited by the things she's excited by.
Sheldon: What if they simply don't excite me?
Penny: Well, just smile and think about koalas.