I knew you guys were secretly alive. I knew it!
Why does the Gravity Falls pool have inflatable pool ducks if they're not going to let anyone use them? The only logical explanation I can think of is that the ducks ARE secretly alive, as Soos had thought. It would also contribute to the fact that Soos is not as dumb and naive as he looks.
Did Mabel use Stan as part of her plan?
When Mabel launched her plan, Stan conveniently cut open the fence with pliers and distracted Dipper, giving Mabel enough time to get Mermando into the cooler. It's possible they were in on the plan together.
Why would Mermando clear his throat?
People normally clear their throats when they're trying to attract attention, not when they're trying to hide.
The coast is clear. / Stan came out of the ladies' room.
I cannot breathe. You must hurry. / How does Dipper not see Mermando?
Nice to meet you. Also, I think I am dying.
But you'd do anything for that person?
Dipper does know what this feeling that Mabel is describing is like. Some may think it's his infatuation with Wendy, and he's realizing that Mabel's going through the same thing. According to this theory, he realizes that he has to be the mature brother and give up his personal desires for his sister. But it's not that. It's really his direct love for Mabel that ultimately overpowers his own desires. The writers could have had Dipper repeat Mabel's words, "I care about you too much to see you like this."
More bottles on the way. / The last two were addressed to Lebam.
Some people take this to mean that Mabel has a secret identical twin named Lebam. A bit far-fetched, I'd say. The idea that Mabel could be hiding something that big is just creepy.
Unless perhaps I ... coated the entire chair with glue last night! / They know each other that well...
What is the kid's crime?
Vivan los patos de la piscina. / Spanish for:The ducks live in the pool OR Long live the pool ducks!
Soos' Really Great Pinball Story (Is that a good title? Do they have to be like, puns or whatever?)