what i liked- the Pini's innuendo (probably my favorite innuendo from the show), Carly and Spencer watching the 'sky' at the end of the episode, Spencer's new invention, Gibby and the dog (though to be honest it got kind of old near the end), Sam telling Carly "nice butt" when she was talking about the butt Carly spray painted blue, amongst other things.
This episode was good but REALLY repetitive. Every scene was either Gibby and the dog, which started off nicely but got too repetitive (oh wow Carly does NOT want to help take care of Sir Licks A Lot...), and if the scene had nothing to do with this, it was only Sam and Freddie arguing over things, like the 'which mom is crazier' argument. It was way too repetitive to fully enjoy. That's not to say I did not like it- there were some laughs to be found, but the episode as a whole is just really repetitive- every scene is either Sam and Freddie fighting, or Gibby trying to allude himself into thinking him and Carly are equals in the taking care of the puppy. Because of all this, C+/B- or so seems fair.