The Universal Estimation Table

Estimate Actual Time
Very Easy 1 Hour
Easy 2 Hours
Quite Easy 4 Hours
Looks Quite Easy 6 Hours
Average 8 Hours
Looks Average 12 Hours
No Clue 16 Hours
Seems Complex 24 Hours
Complex 30 Hours
Very Complex 40 Hours
Can Take Some Time 48 Hours
Fuck 60 Hours
Yeah Looks Pretty Easy 80 Hours

Combine: “No Clue. Can take some time, but yeah… looks pretty easy” = 16 + 48 + 80 = 144 hours.

Source Unknown. See also: “Midwest Distances