When you are getting head, pull out at the last second, and cum in her eyes. With the cum still fresh, you immediately hit her in the side of the head, rendering the bitch unconscious. When she wakes up she wont be able to open her eyes because the dried semen will have cemented them shut.
Did you hear last night Bobby gave that Elise slut a salty sandman? The blind bitch was stumbling around like Helen Keller.