Factual error: A photograph is displayed of people at a 25th year MIT reunion in which they are wearing cardinal and grey jackets. Alumni do not receive these jackets until their 50th year reunion. (00:08:00)
Factual error: Neither of the two problems that Will completed on the hallway chalkboard were actually proofs. With a "proof," you start with a specific conclusion and show the work necessary to verify mathematically that the conclusion is correct. With both problems on the hallway chalkboard, however, the objectives were simply to calculate and arrive at the answers without knowing in advance what the answers were.
Answer: There are two versions of the joke actually. The original which is found on the DVD and then the made for TV joke. I don't remember how that one goes and it doesn't seem to appear on the DVD I've got, but the original joke is: All right, there's an old couple in bed, Mary and Paddie. They wake up on the morning of their 50th anniversary. Mary looks over and gazes adoringly at Paddie. She's like, "Oh, Jesus, Paddie. You're such a good-looking feller. I love ya. I want to give ya a little present. Anything your little heart desires, I'm goin' to give it to ya. What would you like?" Paddie's like, "Oh, gee, Mary. That's a very sweet offer. Now, in 50 years, there's one thing that's been missing, and, uh, I would like you to give me a blow job. I would like for it." Mary's like, "All right." She takes her teeth out, puts 'em in the glass. She gives him a blow job. Afterwards, Paddie's like, "yeah, geez, now that's what I've been missin'. That was the most beautiful, earth-shattering thing ever! Beautiful, Mary! I love ya! Is there anything that I can do for you?" Mary looks up to him and she goes, [Skylar takes a swig of her drink] "Give us a kiss." [And her drink comes out of her mouth, indicating what would be coming out of Mary's mouth in the joke].
Nikki
Even funnier is she has to have a Guinness or a stout so what comes out of her mouth is really dark.