Planck fuck 

The smallest possible unit of giving a fuck—an indivisible quantum of concern. Analogous to the Planck length in physics, it's the theoretical minimum amount of care one can give before it ceases to exist entirely.

“I don’t give a single Planck fuck what you think.”
“That’s a Planck fuck less than I gave yesterday.”
“Somewhere between zero and a Planck fuck is where my interest resides.”

Planck fuck by TT126 July 1, 2025

FUCK PLANK 

A pontoon boat usually owned by 20-30 year old males used primarily for picking up chicks and fucking them on the floor.

Hey Charles is the fuck plank ready for the summer.

FUCK PLANK by Chain-o-lakes August 19, 2008

plankfuck 

Sex where, usually the partner on top, is in a plank position. The bottom partner can be in any position underneath and any hole or area can be being penetrated: mouth, anus, vagina, breasts. The key is that this action also doubles as an intentional intensive core and ab workout for one or both partners.

Damn, my abs are looking ripped after all that plankfucking last night. I’m skipping my core workout at the gym today!

plankfuck by Sheilalee July 17, 2018

planckfuck

noun
the smallest measurable unit of a fuck.

not a single planckfuck was given that day

planckfuck by slashterix July 13, 2012

complete fucking plank 

A phrase used to describe someone that has just done/said somthing so stupid, you'd think it's not possible

G. W. Bush: They misunderestimate me
Tony Blair: You complete fucking plank!!

complete fucking plank by the lad sat down June 14, 2009