A step above spooning. People's utensils almost touching but not quite there. Unlike knifing which requires something to enter juicy flesh. Forking can involve sudden movement and loud high pitched noices.
When two menkiss while their penises are touching eachother
Gay Brian: “OMG, Kevin and I were getting ready to do it last night. While we were getting intimate, we accidentally started forking.”
Straight Daniel: “That’s cool bro, never tell me that again.”