Every Friends Joke

What is Enterprise? And why the sonogram is supposedly about to attack it? Ross is showing guys the sonogram, the first video of his child inside Carol's belly. But Chandler and Joey aren't fast to share Ross's enthusiasm and excitement. Honestly boys are not able to make out much of this sonogram video. Joey:  What are we supposed to be seeing here? Chandler: I don't know, but I think it's about to attack the Enterprise. What is Enterprise? And why is sonogram is supposed to attack it?

  Who is Christina? And why the line about having the same thing as Christina is funny? Guys are back at Monica's apartment watching show in Spanish language. None of friends seem to understand Spanish. So the guys are having fun making up the ridiculous translation of show's emotional scenes. Chandler: Tuna or egg salad? Decide! Ross: I'll have whatever Christina's having.

What is the barn raising scene in Witness ? Monica and Paul are saying goodbye at the door after their first night together. The evening before Paul has reviled to Monica his deep dark secret of not being able to perform sexually, ever since his wife left him. But this night everything worked again! Monica seems to heal Paul. Paul: Thank you! Thank you so much! Monica: Stop! Paul: No, I'm telling you last night was like umm, all my birthdays, both graduations, plus the barn raising scene in Witness. Why the barn scene in Witness is supposed to be a great analogy to Paul here? What is funny about this comparison?