A more publicly usable alternative for the word Fucking.

Generally used as an Adjective, like to emphasize something.

The word Fuck is refferred to as the F-Word generally,
so "Fucking" would be F-Word with an "ing",

so that would be F-ing, and this is pronounced as "Ef-ing" and this evolved into "Effing" or "Efing" being an alternative for Fucking.

The "g" in "Effing" isn't required to get the desired pronounciation, so it is omitted, giving our result of "Effin" or "F-in"

the act of texting people while you are pooping

a way to say the word fuck,without getting into trouble,or it being censored,etc
comes from one of the word fucks names
the f word,f is prounounced eff,or ef,whatever,thus creating effin
mistl means fuck or fucking

a way to say "fucking" so you won't get in trouble.

How to say the word "fucking" in front of young children, so they don't echo your potty mouth.

saying the bad word in a better way

A common way of spelling the term "fuck" on a web page, message board, etc. with a obsenity-censoring program.