According to their Twitter feed,
they're out of sunblock,
The Big Bang Theory Season 5, Episode 1
Yes, how did we live before Twitter?
The Big Bang Theory Season 2, Episode 23
just hit 100
Twitter followers.
The Big Bang Theory Season 5, Episode 12
I was jealous, angry
and new to Twitter.
The Big Bang Theory Season 12, Episode 18
You just e-mail and text and Twitter...
The Big Bang Theory Season 4, Episode 1