ratchetのようなどんな単語でも探してください。
 
1.
a 'bottom selfie' - a photographic self-portrait featuring the buttocks, usually posted by female celebrities on social media networks.
"Cheryl Cole joins Kelly Brook and Kim Kardashian by sharing a rose-tinted 'belfie' " …from the 'Daily Heil', 23 October 2013
Art Deptfordによって 2013年11月15日(金)
 
2.
To take butt selfies.
Taking a selfie of your butt (booty).

Selfie+butt=belfie
Rybear9ohsevinによって 2014年03月25日(火)
 
3.
a belfie is a boob selfie. a belie usually does not have a face in it, but rather just boobs. belfies are commonly sent on snap chat.
did you like my belfie?
h lionによって 2014年07月20日(日)