Refusal to design a soundhole to suit the instrument, instead just throwing on a random f-hole.
Fanned-fret basses.
The "Dingwall/Darkglass" atonal screech.
What's considered "Prog" these days.
Lollipop tuners.
People playing the "My Generation" solo incorrectly OR other band members taking a solo each.
Youtube demos that give us a clean DI tone only.
The bass stylings of Mark King.
YouTube thumbnails.
Tech 21's UK distributor.
Tool.
David Tennant.
BBQ sauce on pizza.