A person who uses an excessive amount of hashtags in their tweets. Ironically hashfag in text speak is a hashtag.
by lolage21 December 31, 2010
A moralfag on Twitter who incites an online mob against people with different opinions and calls it "hashtag activism."
by lulz_jew April 04, 2014
Hashfag: #I #think #hashtags #are #the #greatest #things #since #the #internet.
Regular person: Wow, what a #hashfag! (Oh great, now I'm starting to become one!) :P
Regular person: Wow, what a #hashfag! (Oh great, now I'm starting to become one!) :P
by bluegrey6124 June 07, 2014