Lachancin' it Share definition Flag When you lower your standards and have sex with someone that you would likely get an STD from. "Look at that haggard chick Mark is hittin' on," "Yeah, He's totally lachancin' it tonight." Lachancin' it by PCHR December 19, 2008 0 0 Get merch Get the Lachancin' it mug. Buy Now — $32.95 See more merch