f5 Junkies Share definition Flag A person who constantly refreshes their email inbox just in case someone has emailed them in the last 2 seconds No matter how much of an F5 junkie you are, he's not going to email you! f5 Junkies by rob heeney March 11, 2004 0 0 Get merch Get the f5 Junkies mug. Buy Now — $32.95 See more merch