I went everywhere he was, and I was just off-camera talking to him so we could riff stuff back-and-forth.
We even get appearances by riff Raff (Richard O'Brien) and the Gyro Captain (Bruce Spence) in minor roles.
Obama did a riff about all the challenges America has faced and overcome.
"melodic phrase in jazz," 1935 (but said to have been used by musicians since c.1917), of uncertain origin, perhaps a shortened form of riffle, or altered from refrain. The verb is attested from 1942, from the noun. Also in extended use. Related: Riffed; riffing.
[origin unknown; perhaps echoic; perhaps fr refrain; perhaps fr riffle or ripple in the sense of ''try, shot, crack'']
A refrigerator car; reefer1 (1950s+ Railroad)