On his way to the podium Tuesday night, President Obama chatted with Sen. Mark Kirk, an Illinois Republican who just returned to office after a year spent recovering from a stroke. Then this happened:

Obama is known for his fist bumps, but the exploding fist bump adds a new level. The moment was not shown live on networks Tuesday night but was picked up by reporters from pool camera feeds. Kirk's office also retweeted a GIF of the moment:

After the fist bump, politicians then shared a more conventional hug. Who says bipartisanship is dead?

The 53-year old Kirk, who describes himself as a "fiscal conservative, social moderate, and national security hawk" holds Obama's old seat in the Senate.