Phrases for different situations...
If you make or keep making stupid mistakes and someone asks "Do you do drugs?" You reply "No, Drugs do me"
"I refuse to continue this mental masturbation."
Used when ending a futile task or no results are encountered during such an event. Can even be used in a futile conversation with an inane person.
"Just put some schmutz on it."
"[Sch-moot-z]": Any type of liquid, gel, or paste like substance.