Pretty much sexual intercourse with clothes on. Occurs a lot in small public gatherings where two people show interest but are disinclined to actually take it further. So to make up for it they cuddle closely, even straddling each other slightly, thus the "fucking" part of the word.
Wow, those two are definitely cuddlefucking in that seat
Bob and Steph are cuddlefucking on that seat, you might not want to sit close to them.
The hypothetical man (often a sinistercharacter who decided not to go to boot camp) that is doing your girlfriend/wife while you are on deployment overseas.
Ain't no use in goin home,
Jody's got your girl and gone.
Ain't no use in goin back,
Jody's got your Cadillac,
Ain't no use in feeling blue,
Jody's took your checkbook too.
The ability girls and women have developed to hold several items at once in one hand. The skill has been developed due to the lack of pockets in women's clothing.
I thought she'd need multiple trips to carry her phone, keys, wallet, and Starbucks to her car since she needed the other hand to open the door, but she used her impressive girl grip to carry everything in one hand.