Lancy Nancy 

a girl who can make you feel so funny because she laughs at everything you say and is just utterly awesome

person #1: i like bananas
person #2: hahahahahahaha
person #1: omg you just pulled a lancy nancy

Lancy Nancy by jacklynnnn March 9, 2009

Fancy nancy lancy 

Exageration of "fancy"

Mary, you're new dress is very pretty! Very fancy Nancy lancy

Fancy nancy lancy by Coaca January 27, 2021