A story that is so long and interrupted so many times that the part is repeated over and over again making it either just not funny anymore, or non understandable...
When a girl lets you go under her shirt, the act of squeezing and rolling her nipples in between your thumb and forefinger. You can also suck on them and gently bite them, to get her turn on. Girls love this.
Bob: "I went to 2nd base yesterday"
Frank: "Lucky! How far?"
Bob: "I got all the way to squeezing the nipples."
When it's Sunday evening after you had a sleepover with your friend on Saturday night, and you realize it's back to school again on Monday.
When I was 13, I spent the weekend at Cetin The Cretin's house. As I got home on Sunday evening... I realized things were boring and school started soon... post-sleepover depression.