Seth Rogen is known for his comedy flicks and his tendency to crack jokes, so it should come as no surprise that when Rogen headed to Capitol Hill to testify at a Senate hearing on Alzheimer's research he brought his sense of humor with him.
But Rogen wasn't laughing at the lack of senators in the room during his speech. The actor took to Twitter to call out the 16 senators who left before his testimony or did not attend, according to The Independent.
Rogen specifically called out Sen. Mark Kirk (R-Ill.), who tweeted a picture with the comedy star and thanked him for his testimony.
To further prove his point, the actor tweeted a photo of the empty chairs at the hearing.
Still, Rogen delivered a heartfelt speech—with a few jokes thrown in.
"Thank you for the opportunity to testify today and for the opportunity for me to be called an expert at something because that's cool," Rogen said as he began his testimony. "Yes, I am aware that this has nothing to do with the legalization of marijuana. In fact, if you can believe it, this concerns something I find even more important."
He also made fun of Sen. Tom Harkin (D-Iowa) for not seeing his film "Knocked Up."
He then launched into an emotional story about his mother-in-law, who began showing signs on early-onset Alzheimer's disease at 55 years old. He shared that his wife's mother was unable to "speak, feed herself, dress herself, all by age of 60."
"The situation is so dire, that it caused me, a lazy, self-involved, generally self-medicated man-child, to start an entire charity organization," he said, explaining that he launched Hilarity for Charity to raise money for research and for families struggling with the illness.
Rogen said he hopes in the future increased funding for Alzheimer's research will make charities like his unnecessary.
"I came here today for few reasons. One I'm a huge "House of Cards" fan. ... Two, people need more help. I've personally witnessed the massive amount of financial strain this disease causes...
"The third reason I'm here, simply, is to show people that they're not alone. So few people share their personal stories. So few people have something to relate to. I know that if me and my wife saw somebody like me talking about this, we would feel less alone."
Fellow actor Ben Affleck was also in Washington DC Wednesday, speaking before the Senate Foreign Relations Committee about the Congo.
Affleck, who has made nine trips to Congo, expressed cautious optimism about the outlook for the African nation while imploring lawmakers to remain diligent.
"The accomplishments over the last year were hard fought, but they are fragile and they are reversible," Affleck told a packed hearing room.
The Washington Post reported that Rogen was surprised when reporters informed him that Affleck was also on Capitol Hill and speaking about the Congo. When asked who the better advocate was Rogen quipped, "I don't know, does he live there?"
The Associated Press contributed to this report.