when a lazy person waits until a another is sleeping to sneak in and try to have sex with them.
he waited until i was passed out on his couch and then snuck in and pulled the lazy ninja.
by groupie#1 September 22, 2006
1 more definition
Typical UPS driver that is too lazy to ring the doorbell for a home delivery, but somehow mysteriously (using ninja stealth skills) leaves a notice on the door without you noticing even though you were waiting right there for the entire day for that delivery.
"Man, I was supposed to received my new bun bun from Amazon.com today, but that lazy ninja got past the door and claimed he attempted delivery"
by FuzzyBB April 14, 2009