A feeling, or moment, of extreme awe, disbelief, shock, and/or randomness.
Could be used as an Adjective or a noun.
1. Being so shocked your mind is just thinking "What the fuck".
2. Not believing that you have actually done something that is this amazing and/or someone else did.
4. Something happenes very very very unexpectedly that leaves a lingering presence of "What-The-Fuckness"