'Jersey Shore' Cast Reminisces About JWoww and Pauly D's Infamous Season 1 Hookup -- Watch!

So many fist pumps and hookups to look back on.

The Jersey Shore houseguests got to know each other very well during their six seasons on the show.

In a clip from their reunion special, Nicole "Snooki" Polizzi, Jenni "JWoww" Farley, Paul "Pauly D" DelVecchio, Mike "The Situation" Sorrentino and Sammi "Sweetheart" Giancola look back on old hookups, and one in particular that stands out is JWoww's scandalous season one rendevous with Pauly D.

EXCLUSIVE: Mike ‘The Situation’ Sorrentino Confirms 'Jersey Shore' Reunion: ‘Everyone Is Just So Excited’

"Jenni would you still f**k Pauly?" Snooki asks, prompting Pauly to remember, "She's the first one I sorta hooked up with in the house!"

Of course... while JWoww was cheating on her then-boyfriend in the show's inaugural season, Pauly knows better than to go after her now that she's got two kids with her husband of two years, Roger Mathews.

"Roger would kill me," Pauly laughed. "Beat me up!"

WATCH: 'Jersey Shore' Stars Jam Out to Show's Old Theme Song! A First Look at Their 'Reunion Road Trip'

Of course, JWoww was able to clap back on Snooki by bringing up one of her past transgressions

"Would you still f**k Mike [Sorrentino]?" JWoww asked Snooki.

MORE: Nicole 'Snooki' Polizzi Reunites with 'Jersey Shore' Co-Stars for Mysterious New TV Project -- See the Pics!

This is gonna be great. Reunion Road Trip: Return To the Jersey Shore airs Sunday, Aug. 20 at 9:30 p.m. on E!.

Watch the video below for a first look.