Derived from the drug scandal surrounding Lance Armstrong. Combined with the unreliability or dependability of a person, also know as a "flop". Together used to describe an unreliable, unpredictable or undependable person who may or may not be a recreational drug user.
Friend: Yo we should make plans to hang out some time.
Me: Easy there Lance Flop. We both know you just gonna bail.
Me: Easy there Lance Flop. We both know you just gonna bail.
by Retailprice June 12, 2016