A joke often used in the YouTube comments section, in which someone says "I switched to porn when my mom walked in, it's easier to explain."
People who use this joke think they are calling the video weird in a funny or original way, when in reality it's been plastered all over YouTube thousands of times. Someone who says this is often referred to as a faggot.
Person A: "Lol, this video is so weird I switched to porn when my mom walked in, it's easier to explain!"
Person B: "This joke has been viewed thousands of times and as such has been rendered completely humorless. I imagine even the dumbass that came up with the joke is weeping right now."
When you have a FacebookWall-to-Wall with someone and due to Facebook's new complicated homepage layout, you write your wall comment in the "What's on your mind?" box, exposing everyone to the conversation.
Oh damn. I walled in my status again. Ugh. How lame.
I wish I hadn't walled in the status. Now it's public knowledge that I had anal with Ja'mie.