The effect of stretching your ear too fast.
If you skip/don't wait long enough to go up a size, your ear lobe will start to wrinkle and look like a cat's butthole.
"Dude, did you see his ear? He has that cat butt effect goin' on!"
"My friend went from a 18g to a 00g in 3 weeks, now his ear looks like my cats ass!"