Something that is congonguous is crazy or severe.
Example 1:
Bert: Hey bro, you see that fat chick right there? She has a fat ass!
Bob: Woah! That shit is congonguous, for real!
Example 2:
Tony: Yo, you heard about the video of the kid snorting laxitives?
Berny: Hell yeah I did, the dude was a congonguous dumbass.