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.
James: Babe, let’s Jamfuck
Hannah: Ok babe
by ryan was 100% taken April 3, 2021
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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.
by prairiemantis June 24, 2012
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