rf or :rf:

red face.
A shy smilies shortcut from one of the Malaysia Largest Community Forum.
It became famous after most of the forumer love to add the smilies after every sentences/messages.

Sometimes it don't even means shy, the forumers just used it put rf at the back of their message.

Also widely use in Facebook by those forumers.
Are you ok? rf
Walao I just kissed a girl ! rf
Haha rf
by Malaysia Cari Forumers January 29, 2011
RF is an acronym for the OGPlanet game Rumble Fighter.
by sighIdunwannausemahrealnamelul November 11, 2007
Tina: "He made me pay for the date and then left..."
Me: "That's a major rf!"
by durianbrendadders October 7, 2019
"Real Fucking Shit"
Rfs is used in lots of social media
Instagram: *Posts a random quote*
Follower: *comments* Rfs
by @myboikev October 11, 2015
kelsey and sam RF everyday before book club.
by vjhh June 3, 2009
RFS, an abbreviation for Really Funny Stuff, is a popular phrase that is being used in Internet slang. It is a replacement for the long out dated, and over used "LOL". It is one of many initialisms for expressing bodily reactions, in particular laughter, as text, including initialisms for more emphatic expressions of laughter such as RFFS ("Really Flippin' Funny Stuff")

The list of acronyms "grows by the month" and they are collected along with emoticons and smileys into folk dictionaries that are circulated informally amongst users of Usenet, IRC, and other forms of (textual) computer-mediated communication. These initialisms are controversial, and several authors recommend against their use, either in general or in specific contexts such as business communications.
On May 15, 2011, RFS was formally recognized in an update of the Urban Dictionary.
Guy 1: Hey man, check this funny joke, Two fish swim into a concrete wall. One turns to the other and says "Dam!"
Guy 2: Whoa that's funny, RFS.
by TheMatWilliams May 15, 2011
Reality Filtration System (RFS) ~ The mental capacitor in a person's mind which is used not only to decipher reality from fiction... but to decide how, or whether to, share their skewed opinions on a subject matter with others online.

A person's RFS can be used to distinguish the validity of a message commonly received through visual and auditory channels (televison, radio, third party interraction, etc.).

The RFS is also charged with determining what the person does with information they receive. If they choose to share the information as well as accompany it with an opinion, their audience will be placed in a position to determine if the messenger's RFS is working properly.

RFS, when used in the descriptive sense, is most often used when referring to a person who posts inaccurate information while passing it off as fact... then proceeds to vent, ramble, pontificate or lecture about their views on the subject matter without any realization of how they are perceived by the recipients of their postings.

Their opinionated message is most often followed by incessant postings over an extended period of time. So much so, that the recipients either ignore or simply block/unfriend the person in order to relieve themselves of the constant barrage of redonkulousness.
Cam: Can you believe what Fred posted online?! It's bad enough he believes all that poitical crap, but does he have to constantly blast our newsfeeds with it? I'm probably gonna block his shiz.

Butch: Yeah, he posts that stuff ALL THE TIME!!! Fred's RFS is so out of wack that he doesn't realize most of the folks on his friends list think he's absolutely nutz! That, or he simply likes being an inconsiderate crazyass.
by SickaDatShiz January 25, 2013