Perfucktion is an adjective that describes someone whom you would never date, but would totally fuck if you got the chance.
Katie Holmes is perfucktion, I would NEVER date her because she's a monsoon of bitchyness; but given the chance, You bet I'd totally tap that sweet ass.
A softer version of a perfectionist who does not give a fuck if no one appreciates what they have just made. Moreover, a perfucktionist will tell you to go fuck yourself if you start criticising their work. A perfucktionist knows what they have made is just perfect and fuck all those who disagree.
Save your breath and don't criticise John's painting. He's a perfucktionist, so all your efforts will be wasted.