The ability to verbally (and pretentiously) spew out your entire Starbucks order using the appropriate slang without making a mistake or coming up for air.
Jorge: Man! that shorty sure knew how to throw down some java jive!"
Something a Matthew Amer does with furious vigour when speaking to Lee Latchford-Evans from STEPS. Also applies to John Barrowman and, in certain lights, Mike Read.