When a group of synesthetes goes to a McDonalds, the sensorial landscape changes...
“One of the rings hurt, it went inside my head like a cone, then shrunk and jumped into my neck, clavicle, upper right chest and arms, in seconds. The other ring just shuddered my head and back, in a softer, indescribable kind of shock. There were more shocks from metallic sounds of metal cookware and utensils being dropped on cooking counters ...”
Laurie Buenafe, Auditory to Proprioceptive syn.