Closely related to ridiculous.
Pertains to any situation, and happenstance that isn't to be taken lightly; This is an advancement of the word ridiculous, can be used in a variety of situations / brick-a-brack.
“Dude, …I’ll get there when I can; the freeway has been blocked for over 45 minutes…this is f’n redonculous..”
Simply, and utterly stupidly sadly Re-donculous
Re-Docnoulous to the point of retardation here ok
FInally, last but not least, Can you see that lions head on a giraffes body over there, now thats just simply re-donculous, now thats just a mushroom trip out right there!