gum chewers
whistlers
slow drivers
slow people
other people's kids
radio ads
jacked up trucks that spew black smoke when they shift
people knocking on my front door uninvited
unnecessary low speed limits
stoplights that turn red the instant someone pulls up on a crossing street and they just turn right, didn't even need a green for that
gyms that are 90% empty cardio machines, 10% free weights (so basically every gym ever)
visors (in the car) designed to only shield someone who sits 6 inches from the wheel
when kids think a hot tub is a bath tub (ie public pools)
short usb charging cables
notifications in Windows 10
1 ply toilet paper
sales tax on private transactions of used products
all mens shirts being designed for short guys


Okay so really this just turned into a list of things that annoy me. And while I could go on all day, those are some that first come to mind.