Sheldon has lost before.  He usually loses when Wil Wheaton shows up.  And he lost when his World of Warcraft account was hacked, but Penny got his stuff back.  And the quiz bowl where he lost when he refused help from his team.

Mulva?

Mulva?

These aren't exactly people who have a lot of friendship options.

These aren't exactly people who have a lot of friendship options.

"And now for something I learned watching the Proboscis Monkeys of Borneo!"

"And now for something I learned watching the Proboscis Monkeys of Borneo!"

Oh, so you think having a humungous tattoo on your shoulder is stupid and juvenile?  Well hello Mr. Fancypants!

Oh, so you think having a humungous tattoo on your shoulder is stupid and juvenile?  Well hello Mr. Fancypants!

Paid  to eat cake:  the American dream!

Paid  to eat cake:  the American dream!

Hobbit rescued

Hobbit rescued

Didn't Charlie thank Mac for getting him that intel?  Back at the bar, right before the detective showed up?

Didn't Charlie thank Mac for getting him that intel?  Back at the bar, right before the detective showed up?

When Dee jumped out of her car in "Carlie and Dee Find Love" wasn't she holding the mini-bat she and Mac used to chase a homeless guy away from the bar (in "Bums Making a Mess All Over The City)?

When Dee jumped out of her car in "Carlie and Dee Find Love" wasn't she holding the mini-bat she and Mac used to chase a homeless guy away from the bar (in "Bums Making a Mess All Over The City)?

I really liked it too.  I wouldn't say it was all that random, though—after all, both plot threads sprung from the same event, it turned out.  And the abrupt switch at the end, where Frank cashed in his "beloved" company, was perfectly in character.

I really liked it too.  I wouldn't say it was all that random, though—after all, both plot threads sprung from the same event, it turned out.  And the abrupt switch at the end, where Frank cashed in his "beloved" company, was perfectly in character.

Well, Donald Glover was hired to portray someone roughly his own age, so it's kind of a different story.