When you delete your number and all texts and calls logged in a womans phone who you've just met while she's sleeping after a romp at her place and you leave without a trace. You don't clean anything and don't leave anything of yours.
"Remember that chunky blonde from the Redrock?"

"Yeah she looked like a reeeal slut"

"I went to her place last night and gave her the halucination."

"Shut up! You're the man!"

"And ill never go to Redrock again."