revertibro 

The phenomenon in which an older mature male reverts to his immature and lewd self when spending time with old friends.

It typically manifests itself in overly sexual or macho talk and behavior.

John suffered a major case of revertibro when he saw his friend Tom, who he hasn't seen since he was seventeen.

revertibro by GFrohman November 30, 2013

revertigo 

When you see people from your past, you start acting like you did when you used to spend time with them. (i.e. you start acting like a 14-year-old when you unexpectedly run into your freshman year boyfriend at the grocery store)

As made popular by the character of Marshall Erikson on an April 2008 episode of CBS sitcom "How I Met Your Mother".

When Linda, the 50-year old elegant socialite, would squeal with delight, bounce on her heels and speak in 70's youth-vernacular whenever she got together with her sorority sister Patty. Her husband explained to his friend, "It's just Revertigo."

revertigo by Deerdles April 21, 2008

revertigo 

going back in time, in personality

when lily meet her old highschool friend her personality went revertigo

revertigo by tanyasmith April 22, 2008

revertigo 

brought on by being near a person or persons from your past, revertigo is when a person begins to act how they did at the time they knew said person(s).

Coined by the character Marshal Eriksen on the show "How I Met Your Mother."

Tim: Why is Jerry talking like that?
Michael: Revertigo. He was really into the whole beatnik thing in high school.

revertigo by Alex Harm April 21, 2008

revertigo 

When you're around someone from your past and you revert back to the person you were when you knew them.

You know who gets really bad revertigo, Lily when she's around her old friend Michelle.

revertigo by klwilson April 21, 2008

Revertigo 

Dizzyingly inexplicable reversion to past behavior in the presence of a lost aquaintance once associated with the behavior.

Made famous by Robin Sparkles on HIMYM (How I Met Your Mother). She got revertigo and started acting like a high schooler when when her first boyfriend showed up unexpectedly.

Revertigo by Michael Parker April 21, 2008

revertigo 

a phenomenon where when you're around people from your past, you start behaving like them.

"Robin, your revertigo is really starting to affect your work."

revertigo by J. Jamieson April 21, 2008