Gettingthe itis (tired after eating immense amounts of food) while being crazy drunk and high.
"Dude that party was crazy! I took too many shots, smoked a fat L, and ate a bucket of kentucky fried, I passed out like right away."
"Damn man, sounds like the crunkitis hit you hard."
A girl who is so fantastic and wonderful that you absolutely must have a crush on her even though you have no chance and she is way out of your league.
"Hey you know that girl Ana who works at the doctor's office? She is so crushtastic. I have beencrushing on her forever"