I love, love, love Urban Dictionary. I don't just love them because they're my go-to when I don't understand what a cool, young person is saying to me. But I love them because I can peruse the site all day long and then pull crazy unintelligible sentences out of my ass. For example:
"I was late because I had Kitchenhiemer's while wearing my prostiboots and then fell apart like a Robert Hall suit because I tripped and ate it on my face."
"Man, you need to get your shit in one sock. You smell like you ate a box of assholes."
"Get that butterfist away from me."
What's your favorite saying that no one understands?