UK Version
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(100 pts) What was the sentence that caused Greg and the "Neon Love Chicken" to crack up during Tony's bartender verse about an inflatable pig?  

Greg and Ryan were laughing at Tony when he said
"When I see that porker, I spill my seed"
(at least, that's what it sounded like to me!)

When Colin played the "one word kid" he repeatedly said "yep". 

(100 pts) Name another word he uttered.
(50 pts) What was the game being played?

When Colin was the one word kid, some of the other words he uttered were:
Nope, Woah, Bye... some various others...
The game being played was number of words.

(50 pts) Who used "My little Pony" as an author?

Tony Slattery used My Little Pony as an author

US Version
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(50 pts) Who DID NOT do the elephant trunk motion during "Pat the Sprinkler guy" African Chant?  (Drew, Greg, Pat or Linda)

Greg Proops did not do the elephant TRUNK motion, he did the elephant TAIL instead

(100 pts) What was the other instrument being played besides Laura on piano and Linda on guitar during the Yiddish song "Sue him, sue him big"
(hint: the song was right before the "jugband blooper" song)

CeCe played Clarinet during the Yiddish song

(100 pts) What is the only game to date where Wayne has sat on the piano?
(50 pts) Who was he imitating in that game?

Wayne sat on the piano during Greatest Hits when his style was Eartha Kitt.