Brown Buterfly Kisses are the act of performing some kawaii butterfly kisses on the anal sphincter of the willing participant.
"Brian is so cute, He gave some really tender brown butterfly kisses last night to say cheers for me taking a load in the brown zone."
by NRE808 August 22, 2018
The act of rubbed your butt with another persons butt while being lathered with soap. Much like a butterfly kiss but with buttcheeks.
by Stoctopus March 16, 2021