Quoted from swampfire:

Here’s kind of a sad youthful memory. I was 13 or 14, visiting my aunt in Wisconsin. Totally clueless about girls. Well, she played matchmaker and had me go to her friend’s house to meet her daughter, who was my age. We’re in her bedroom and she says: “I think one of my boobs is bigger than the other one, what do you think?” I completely missed this obvious opening, and said “what do you think happens when we die?”.