The One With The Sonogram At The End. Between Monica’s parents coming over, Ross finding out that Carol is pregnant, and Rachel having to return her wedding ring back to Barry, this episode is full of crazy events!
A life lesson that can be taken from this episode is: life may throw many obstacles in your way, but you just have to keep pushing on. We see this happen through every character I mentioned earlier. Monica has to push past her parents liking Ross more than her, and she does even though they critique her every move. Ross has to push past the humongous shock of finding out that his ex-wife is pregnant, and at the end of the episode he is so happy when he sees the sonogram of his baby. Even though he was so confused as to how it was going to work, he moved past those feelings and was just happy that he could be there. Finally, Rachel has to push past the awkwardness involved in returning her ring to her ex-husband, which becomes worse because of the patient in Barry’s office. And yet, she gets over it because she knows that returning the ring is the right thing to do. All of these are obstacles, and Monica, Ross, and Rachel simply persevere and manage to push past them.
Monica with her parents 
Ross in his state of shock 
Rachel and the ring 
Friends
The Squinting Observer 