i've never understood how "mother father" is supposed to be even remotely viable as a replacement, it sounds utterly nonsensical. Are we talking my maternal grandpa? My paternal grandma? Or maybe we're talking about someone's hermaphrodite parent?
i get that, but when replacing a curse it still has to make sense, like "shut the front door" instead of "shut the fuck up"
"mother father" just sounds like that weird old american device that would read closed captions on the TV and replace curses with softer words, but wasn't advanced enough to process grammar.
Yippee Ki Yay originates from the 19th century in the Western United States. I know it as an expression of excitement or joy. Example: While playing as cowboys, who might say Yippee Ki Yay as you (pretend to) ride off on your horse.
This screengrab is in reference to the line that is said in Die Hard movie(s). The father is claiming to say the last word in the movie catchphrase.