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2.
when reuben is on the front lines of a war
Kristen: OMG, THEY'RE INITIATING THE DRAFT
Reuben: We could be in some serious shit, literally.
by reubz March 28, 2012
 
1.
when a delorean hits 88 and travels through time
Doc Brown "when this baby hits 88 your gona see some serious shit"
by duderob92 June 19, 2011
 
3.
1. Commonly used as a response to anothers statment of disbelief in a questioning manner.

2. Also used to add severity to a description.
1. "Did you hear he fucked that fools lady?" Serious shit?

2. Two thirty round clips velcroed together with hollowpoints for an AK-47 is some serious shit.
by Bob Jimenez December 27, 2004