Not like 'jackknife' where a semi trailer loses it on the highway. Jackfish refers to an amateur who can not park an f'n trailer.
Somebody please spot Rebecca, she's shit at parking the trailer and keeps jackfishing it.
The act of sharing a bottle of wine with the opposite sex with the desire for physical affection. The effect is lost when one falls asleep, thus becoming, unbuttered.
I was trying to butter up the wife for some excitement. Instead, She fell asleep at 10 unbuttered.