The Funniest Celebrity Tweets of the Week!

Nothing really surprises Lena Dunham. If you've seen Girls, you know she's seen, imagined, or tried nearly everything. But Justin Bieber's alleged choice of drugs on the wild night that landed him in jail? That little discovery inspired the actress to chime in on the pop star's misfortunes this week. Meanwhile, in an attempt to understand what has led Justin astray, Seth Meyers pinpointed the moment everything went downhill. In other can't-miss tweets, Ellen is cashing in on marijuana trends, and Kelly Osbourne had a pretty crappy time at Barney's. Keep reading to LOL at all that and more!

Lena, don't you know Justin is planning for his future?

Because nothing is as traumatic as seeing someone imitate you on Saturday Night Live.

Ka-ching!

Now, Jimmy, don't go hating on our Samoas and Thin Mints.

I would love to see Rob Ford and Justin Bieber in a drag race.

— kelly oxford (@kellyoxford) January 23, 2014

Leave it to the Canadians.

Cate Blanchett referencing Matthew McConaughey talking about Neptune in his acceptance speech last night was a joy of my life

— Mindy Kaling (@mindykaling) January 19, 2014

We loved this, too!

More than 11 million people have quit Facebook in the last 3 years. Unfortunately, none of them were your parents. #fallonmono

— jimmy fallon (@jimmyfallon) January 17, 2014

Ah, nothing like a parental notification.

Miley Cyrus could never live in the kind of cold we're having here in NYC. Can you imagine all the poles her tongue would get stuck to?

— Joan Rivers (@Joan_Rivers) January 22, 2014

Time to get that tongue insured, Miley.

The main thing your selfie is doing is showing me how dirty your house is

— Whitney Cummings (@WhitneyCummings) January 19, 2014

Whitney is judging you.

Bye bye Blockbuster! Nuts. There goes my 26 cents a year for "Beaches."

— Bette Midler (@BetteMidler) January 23, 2014

Bette's royalty checks are getting smaller.

Hands down one the funniest things I have ever seen! A dog shitting in Barney's and about 20 people… http://t.co/xHhtlhKvBe

— Kelly Osbourne (@KellyOsbourne) January 21, 2014

Picture Kelly Osbourne laughing and snapping that pic as you walk through it.

i have no life pic.twitter.com/M4COTM6GlH

— christine teigen (@chrissyteigen) January 23, 2014

Surprise, surprise — Chrissy has interesting chip names.

Wanna make Oprah smile in a pic with you? Give her financial advice. http://t.co/FAK5kZHRe6

— Damon Wayans Yunior? (@wayansjr) January 18, 2014

Damon knows Oprah laughs her way to the bank.