Hagan's tweet came a few hours ahead of Biden's cameo appearance on "Parks and Recreation" Thursday night.
"Meeting Vice President Biden was a thrill for me and for Leslie," Poehler said in a statement, according to The Huffington Post. "He was a good sport and a great improviser. The Vice President maintained his composure while I harassed him and invaded his personal space. The nation of 'Parks and Rec' will be forever grateful."