It's a deliberate tyop on forthcoming, as for a book, left uncorrected, to signal a possible reaction to it from a certain person in the form of froth-at-the-mouth hate and jealousy.
A: Mr Author, is your book still forthcoming?
B: Yesss.
A: Who's gonna buy it?
B: About ten people minus you.
A: It'll fail.
B: Sure it will.
A: Good luck!
B: Good luck, eh, with all that froth in your mouth? Sure my book'll be forthcoming soon and then it'll be frothcoming, so wipe your mouth now.
B: Yesss.
A: Who's gonna buy it?
B: About ten people minus you.
A: It'll fail.
B: Sure it will.
A: Good luck!
B: Good luck, eh, with all that froth in your mouth? Sure my book'll be forthcoming soon and then it'll be frothcoming, so wipe your mouth now.
by vivauganda July 14, 2011
Get the frothcomingmug.