You: Second person singular subject pronoun.
are: The verb "to be" conjugated to the present tense with second person singular subject.
a: Indeterminate article
{Erik}: Have you seen the video for Kat McSnatch's new song, "You Are a Cunt"? It's gone viral!
{Cathy}: Yea, I've seen it and even downloaded it to my Ipod!
{Erik}: Our 'rents are going to either ground us for eternity or die laughing if they ever hear it!
'You are a joke' is a phrase used by someone who believes you to be inferior to them. To belittle, disrespect, embarrass, and humiliate you. To make you feel as though you are stupid, unimportant, or unwanted, etc. and make themselves feel supirior to you.
A phrase used to representsomeone that is always saying odd things, or things out of context with the original topic of conversation. This is also a term used for really smart people who always share their knowledge about a specific topic, whether they were asked to or not.
When you ask someone to hit the button for your floor on the elevator and they say. I was 14 once. I remember it well, I got a bike for my birthday that year. You say to them, you are a strange cookie.
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.