Sex position with girl on bed, hips up, supporting her bodyweight herself with her partner controlling her hips. Almost like reverse cowgirl but laying down.
The Jam fuck is a sex position where the man is laying down, somewhat like reverse cow, but the woman is not on her shins, rather she is on her feet. Works well for people with curved up dicks, like James English.
when activities are fucked up in multiple ways; when daily life becomes affected by someone elses incompetency; public actions that cause harm far exceeding reason.
1) man, they gave me so much shit to do at work today today, i don't know what will get done on time, this job is totally jamfucked.
2) Holy crap George Bush has jamfucked our military.
3) The supreme court has jamfucked the nation with ideas of false liberty.