That's the premise of "Delivery Man," where David, the titular character (played by Vince Vaughn), finds out that 142 of those children are now suing the sperm bank to find out the identity of their biological father. David's already struggling to figure out his life -- his pregnant girlfriend (Cobie Smulders) has rejected him, he's working a dead-end job -- and thinks connecting with these kids might be his ticket to a greater purpose.
The trailer follows David as he secretly seeks out some of the kids -- now all in their 20s -- and helps them out with small tasks, like temporarily running the coffee shop where they work or shooing away sleazy cat-callers.
"For the first time in my life, I'm doing the right thing," he tells his friend and beleaguered father of four, played by Chris Pratt.
Will David decide to come clean and reveal who he really is? The answer is probably yes, but "Delivery Man" looks like it's enough fun that we'll enjoy the journey despite the predictable destination. Look for it in theaters November 22.