We're just so glad he seems happy!
The source spilled:
Awww that's so amazing!
The insider added:
[Image via Guillermo Proano/WENN.]
Imagine our surprise when we realized that actually WAS Sarah Palin!
And with Jimmy playing Russian president Vladimir Putin, The Tonight Show actually got political for a minute! Then they covered Happy by Pharrell.
Ch-ch-check out the video (above) to see all the phone call craziness!