follaback 

When someone follows you on Twitter and requests that you follow them back.

"Hey, I just followed you on Twitter! Gimme a follaback!"

follaback by lovehound August 20, 2009

Followback 

Followback is a website where people can get paid by others to follow, like, comment or post on social media.

A friend of mine got paid $150 on Followback to like a photo on Instagram.

Followback by scully2425 September 24, 2017

Hollaback Girl 

In order to fully understand what a "hollaback girl" is, one must first understand what it means to "hollaback." When one hollas back, one responds to a verbal insult with their own reciprocal verbal insult. This in itself is not necessarily a negative thing, however to become a "hollaback girl" is something to be avoided. A "hollaback girl" is a girl who responds only with these verbal insults, without ever actually taking it to the next level and kicking some ass. In other words, a hollaback girl is all talk and no walk.
This phrase was originally popularized by Gwen Stefani via her song "Hollaback Girl" from her debut solo album L.A.M.B. The song was a response to a comment Courtney Love made about Gwen in an interview with 17 Magazine. Love reportedly stated "Being famous is just like being in high school. But, I'm not interested in being the cheerleader. I'm not interested in being Gwen Stefani. She's the cheerleader, and I'm out in the smoker shed."

Gwen, upon hearing this, did not hollaback like a petty cheerleader. She instead came back with Hollaback Girl. In explanation of the song she said "Someone one time called me a cheerleader, negatively, and I've never been a cheerleader. So I was like 'Ok, fuck you, you want me to be a cheerleader? Well I'll be one then. And I'll rule the whole world. Just you watch me.'" This is clearly in reference to Love's comment. And based on "Hollaback Girl"'s success, I'd say Gwen held true to her word and took over the world.

1.These bitches were talking smack, so I had to holla back.

2. All that girl ever does is talk smack. She never takes any actual action. She's SUCH a hollaback girl.

Hollaback Girl by Violet Vanity October 18, 2009

HollaBack Humpday 

When you send out an invitation to one of your regular bootycalls on a social media sight for Wednesday night.

damn Its Wednesday and I'm horny...I'ma HollaBack Humpday my gurl Patricia on her Facebook wall and see if she's free!

HollaBack Humpday by Sexyandbored January 17, 2013

fullbacker 

A Fullbacker is one who pushes others out of the way on a crowded dance floor at a sludgy college bar to reach the painted pole or otherwise significant ornament at the center of the dance floor.

The guy just knocked over six people! Now we can dance near this gold pole. He's a great fullbacker.

fullbacker by the fullbacker February 23, 2011

fullback 

A woman who wears full coverage panties, i.e. briefs or granny panties. Fullbacks generally have blatantly visible panty lines.

Fullback can also be used to refer to large panties.

Check out Danielle's panty lines! She's a fullback.

Robin traded in her fullbacks for thongs.

fullback by 0070180 August 15, 2007

Fallback Friend 

The friend that your other friends don't know, who you go to when the shit hits the fan.

Jack:I'm tired of all the drama,I'm gonna hang with Chris.
Bob:Who?
Jack:Exactly.

"Dude, Where were you last weekend?"
"I was at my fallback friend's place all weekend, so I could avoid the shit thats been happening."
"Good plan."

Fallback Friend by The New Man April 21, 2008