REP. RYAN: You can cut tax rates by 20 percent and still preserve these important preferences for middle-class taxpayers --
VICE PRESIDENT BIDEN: Not mathematically possible.
REP. RYAN: It is mathematically possible. It’s been done before. It’s precisely what we’re proposing.
VICE PRESIDENT BIDEN: (Chuckles.) It has never been done before.
REP. RYAN: It’s been done a couple of times, actually.
VICE PRESIDENT BIDEN: It has never been done before.
REP. RYAN: Jack Kennedy lowered tax rates, increased growth. Ronald Reagan --
VICE PRESIDENT BIDEN: Oh, now you’re Jack Kennedy.
Look at Ryan's face, he is genuinely amused. I felt he didn't mean to react so unguardedly to that riposte. But he couldn't help himself. He was trying to invoke a bullshit bi-partisan air and Joe was having none of it.
The whole night was full of epic takedowns, but for pure enjoyment that moment was one in a billion.