Taint Painting is a homosexual sex act. After anal penetration and/or ejaculation, the dominant partner removes his soiled penis and wipes the excremement/cum onto his partners taint (the area between the testicles and anus).

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)

When a woman rides your face while shes on her period and the other person comes up with red wings