Sound Is Just Wiggly Air Mug

"Hey buddy, what actually is sound?" Forget about compression and rarefaction, about transmission of energy through molecules that actually don’t travel anywhere themselves, carrier waves or kinetic to mechanical to electronic transduction... Give them the most simple, yet true answer there is: Sound is just wiggly air!

This design is also available on a short or long sleeve tee, tank top, sweatshirt, hoodie, mouse pad, gear bag, phone case, and a sticker! See them all here.

There is nothing better than cradling a hot mug of coffee or tea between both hands on a cold winter's morning… Well, okay, there are lots of better things than that, but is there anything better than doing it with one of PA of the Day’s hilarious designs printed on it? Perhaps you need to spread a certain sentiment amongst your tour bus comrades? Perhaps you need a motivational pick-me-up first thing in the morning? Maybe you want to grease up the boss with a fresh cup of coffee, or chill them out with a nice cup of tea? These high quality 11oz, 3.75” diameter ceramic mugs are a perfect canvas for your message. Check out all of our mugs here.