"Silly", maybe, but I liked this a lot, once you got started.

You could go on in this vein for quite a while, possibly, say
by having Genma cook up an elaborate plot to drag the kids to
some specific Chinese training ground he's just learned about
(Ah, sirs!  Nobody use Training Ground of Accursed Mirror Maze
now!), and Nodoka scheming to "misplace" Akane's birth control.

 Morning Sun

A Ranma 1/2 fanfic by June "KaraOhki" Geraci

<clip>

"Pop, would you give it a REST already?  We've been married TEN
YEARS!!"

Heh.  Good joke!  I think you should have got here faster, though.

"Two or three days more, I think.  Mom is driving me crazy!  She keeps
dropping hints
about babies."

"She's on that kick again?"

Before Ranma could respond, the bedroom door flew open again and two
small children
ran in and shut the door behind them.

Double heh.  Not quite as funny as the first joke.  This may be just
me; I had to read it a couple of times to realize that Nodoka is on
about _more_ kids.  Also, you might try to tighten this up somehow,
so the joke comes out quicker.

his son locked the door and
tested it before he joined his sister in bed with them.

Why?  Was this ever explained?  Was it just to keep Genma out?

"Daddy told us if Grandpa said 'training trip' to say no.  Grandpa
said to listen to him and put on our backpacks."

Triple heh.  

"I think I've had it, Akane.  A training trip sounds great.  If Pop

Uh oh.  Cause for worry.

"Saotome, they're gone."

"We'll simply have to bring them back!  I'll get my pack."

"I'm coming with you, Dearest."

Ah.  Relief.

"Daddy, why are we walking in circles?"

"Shh!  You'll see."

Quadruple heh.

Ranma started to get up, and Akane pulled him back down.

"Where do you think you're going?"

Nicely complementary to your starting scene.