Intentional Tippping OVer Your King, Automatic Resign?

Yeah, sure, but outside the US you can probably tip over your King and just move with it (him). :) As long as you do it during your allotted time.

Resigning Hollywood style, I would rather wait for the hand, the stopping of the clock, signature, spoken words. A sum of clear indicators.

Reminder:

Unitedstates (own) Soup Cooking Federation

www.chesscincinnati.com/wp-content/uploads/Comparison-of-FIDE-and-USCF-Rules-2018.pdf
http://www.sudburyriverchess.com/uscf-fide-rules-twocolumn.html

@petri999 In the US, the rule is that the king is moved first. the king is transferred from the original square two squares toward either rook on the same rank then, the rook is transferred over the king to the square adjacent to the king on the same rank." (8A2 6th edition of USCF Official Rules of chess).

The correct American way does not violate any rules of FIDE.

Does the US rules allow castling to be done with 2 hands? If so that does violate FIDE rules as Article 4.1 clearly states that all moves must be made with 1 hand, Nakamura was warned about this in the 2015 World Cup.
http://www.chessdom.com/nepomniachtchi-appeal-rejected-arbiter-to-issue-a-warning-to-nakamura/

Intentionally tipping over your King is the conventional sign of resigning..accidental is nothing tragic.
An arbiter could easily intuit intentional from accidental by a quick look at the logistics of the thing.

I never seen in tournament tipping over you king so it is hardly conventional.

@JamesPeirce American rules seem to have "variations" (all tournament can have some exceptions like being late and such)
http://www.sudburyriverchess.com/uscf-fide-rules-twocolumn.html
"When castling, the player must touch the king first (or the king and rook at the same time). However, a variation of rule 10I2 allows the player to touch the rook first."

as american rules do not have one hand requirement for moving explicitly then these two imlie two handed castling may or may not allowed in USCF sanctioned event

And national rules can different from FIDE rules that is no problem. Just that FIDE rules must followed is tournament results are counted towards Elo ratiing.

"Touchee-Movee" ,although clearly addressed in the rules,is generally an agreed-to condition in most tournys at the lower end of the spectrum.I offer these comments as one who played comp chess during the late 1950's thru to the early '70's. Two-handed castling was ok so long as you declared intention to castle before you touched either piece,but once you declared intent,you could not change your mind.The warning "garde" was a thing you said to your opponent when your last move threatened their Queen.

@petri999
just because you have never seen it does not make me a liar.

Could it be the tipping king inclusion in the USCF rules is for people who are unable to speak? What's the FIDE equivalent of that?

Nope, tippinh king is probably old habit that has stayed. You do not need say anything anyway. First stop clock and then offer handshake. That is resign. You are not allowed to stop the clock unless game is over or you are requesting arbitter.

And check mate comes from perisna 'Shah Mat ' i.e. king is dead. Dead one quite oftel lay down dont theyt. Letting your king die is fine for non tournament game with a friend. In tournament people would see as bit odd (dunno about USA where it is in rules even) But if you tip the king stop the clock and then offer your hand, why not .

USCF 13b: "Saying I resign or tipping over the king are relatively clear ways to resign."