An "ear taser" is a noise or sound you hear that goes in your ear and makes your whole body shudder ie nails on a chalkboard
"Justin Bieber's singing... oh my god... ear taser!"
"She said 'I wuv you' and ear tasered me. I HATE baby talk."
"She said 'I wuv you' and ear tasered me. I HATE baby talk."
by Stacerella August 21, 2014