Nicole 'Snooki' Polizzi and Jionni LaValle conceived their daughter while he was driving.

The former 'Jersey Shore' star admits she and her husband - with whom she has kids Lorenzo, three, and Giovanna, 12 months - couldn't resist ''hooking up'' while returning home from a date and didn't even stop to pull over when they were in the throes of passion.

Speaking on 'The Wendy Williams Show', Snooki confessed: ''Me and Jionni went out on a date in Hoboken and we were driving back and we started hooking up while he was driving.

''I just climbed on top of him. While [he was] driving on the highway.

''My period didn't come and I got pregnant.''

The 27-year-old reality star was previously known for her wild partying lifestyle, but she recently admitted she doesn't really drink alcohol any more and is stunned by how much she used to consume.

She said: ''I'm not drinking, I don't have the urge to, because I drank so much from 13 to 24, so I kind of like drank for 10 people's lifetimes, but once in a while I do like to go out with my girlfriends. And it's mainly wine, it's not like chugging vodka anymore. But I love my wine...I can't drink like I used to. I don't know how I did it.''