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1.
Someone who excessively uses hashtags on the internet.
Friend 1: "Just went to the movies. #Swag"

Friend 2: "Wow, what a hashfag"
by JFthePROFESSOR May 08, 2011
 
2.
People who use hashtags on facebook.
Hashfag facebook post:

I-495.. #novaproblems
by Oh4Sh0 February 09, 2012
 
3.
Someone who is so addicted to twatter, they use hashtags outside of it.
These include;
Tumblr.
Youtube.
Facebook.
Hashfagger: Hey guys, going to moves l8ter with my homieszzzz #swagggg

Normal guy: Wow, nice job hashfag. Fucking asshole.
by Crock Cacaine March 01, 2012
 
4.
One who excessively uses hashtags their posts on Facebook and/or Twitter.
Hashfag: Going to the mall. #swag #lol #yolo #gonnabuystuff #hashtag #420 #imsocool

Normal person: Fucking hashfag...
by iduncurr June 18, 2013
 
5.
a person who commits the crime of hashfaggery or hashfaggotry by annoying others with their use or incorrect use of hashtags
a hashfag's facebook status: I got so much done today! #productive
comment on said status: hashtags don't work here! gtfo
by bellethebeast June 15, 2013
 
6.
A moralfag on Twitter who incites an online mob against people with different opinions and calls it "hashtag activism."
If you supported #CancelColbert, you are a total hashfag.
by lulz_jew April 04, 2014
 
7.
A social media obsessed person who cannot refrain from tweeting, instagramming and all other forms of publicising their pathetic lives. #cunts
Omg check out my pizza!!! # soogoodd

Dude ur such a Hashfag
by aaronymous March 26, 2014