1. Twins are strange. Whether they're finishing each other's pie, like Troy and Abed, who are brothers of another mother, or eating each other in utero, there's something just not right there.
2. Taking care of your children matters. But blow-up bounce pits are no threat to anyone, even girls who normally wear burqas. "If a young lady wants to go in a bouncy house, she should go. You did a noble thing," Shirley told Abed after discovering that her sons were impersonating his cousin so she could go have fun for once—and learned that she was a better mother than she'd thought along the way.
3. We make our own families. After Jeff's hot professor dumped him just before Family Day, the group stepped in to take care of him, just as he'd later step in to help Pierce learn to become a father. "I'll give Jeff a shoulder to cry on, and you boys put a dead bird in that bitch's glove compartment," Shirley commands, rallying the troops.
4. That said, it's possible to take things a little too far. Britta learned that the hard way when she tried to bond with Troy's terrifying grandmother, and ended up getting a switching. Nobody can say Troy didn't try to stop her.
And Jeff got himself declared a "chip off the old block" after seducing Pierce's ex-stepdaughter and discovering that she's grifting him. But no matter how awkward things are, it's worth trying. "Have a family. Share your life," Pierce told Jeff. "That, and understanding computers are two things you just can't knock out at the end."