Shot a cow
To fail suddenly, unexpectedly, and humourously
Wow Robin, you really shot a cow on that jump!
You Shot a Cow
To fail suddenly, unexpectedly and humourously without you or other surrounding parties initially realising your mistake.
*Following a breif period of silence where it dawns on everyone what an idiot Robin has just been*
Stu: Hey man, you're an idiot, you shot a cow on that one!
Stu: Hey man, you're an idiot, you shot a cow on that one!