Gustav was just resting on a mountain range as usual, just watching the tinies down below come and go during the day, then...

BOOOM BOOOM BOOOM BOOOM

The ground shaked extremly fast, as it wasnt just one big dragon coming closer but two of them.
Gustav coudnt see the huge fingers that came down to pick him up until they where already picking him up, he coudnt see anything until they finaly open their paws, to let Gustav free.
-Hellooooooooooooooooooo! my little tiny brother, said ziz in a high pitch voice and a huge smile.
-Hi down there, said Okeana, with a smug grin.
-Mmmm, hi, said gustav looking at the two of them -Why are you both here? he said looking down noticing that he was on the blue paws of her girlfriend, that for once was an similar zize to zizaly (Massive!)
-Oh- Okeana responded -We both where talking, and we realised something!- Okeana put him on her chest and then it moved forwards pining Gustav between the two towering and defenitly planet sized dragonesses from his perspective.
-Aaaand what did you two figure out? He said on a nervious tone.
-Well- Said ziz looking down at her almost microscopic brother (to her perspective) -You have asked some favours from me, but-
Then Okeana interrupted -And you owe me a date aswell, AAAaaand... you havent pay us back for a while.
-Oh, yeah, i mean i got all this weeks booked already, there is a lot of scenery to watch and a lot of sleep time scheduled already, i know i can put all of that in the next month- Gustav said with a nervious grin.
-Here is the thing Said okeana.
-We decided that this night we three will go out, so you pay us back at the same time!- Ziz continued -And oh, dont worry about your bookings- She snaped her fingers, whic she loved to do to show when she was altering reality -Now all of your hours are free! no need to thank me- she said with a bit of a smirk to her little brother -Though you might find a couple of dates there now- she finished looking at Okeana.
Okeana just looked down at Gustav and trew him a couple of slow winks -Now i owe HER some favours- she finaly said with a super smug look and smiled widely -NOW, i want a good sea food place.
-And i would love to get some gooooooooood and cheesy pizza- Ziz continued-
-Oh, ah, i dont think we can find those two things in the same place? well i mean also we all need to shrink down a bit, or we are not going to fit anywhere- Gustav looked at the two looming dragoness just waiting for them to shrink down so he could be free.
-Doooooont worry about it, just find a good place i take care of the rest- Ziz responded showing her paw making a fat snap acompanied with a big wink. Then the dragon started to shrink down.
He didnt notice it at first but he quickly notice how he was going lower and lower, but zizaly and okeana still loomed above him -uh, can i ask a question? Why are you two still uhm...
-Big? oh yeah, you owe a lot of favours to your sister, so for this night you are set up in proportion to me- Okeana said -After all! you owe me a big date, dont you? she finished with a lovely expresion.

At the end both dragonesses ended with the size of a medium building, gustav in short ended up even smaller than a chihuahua, Okeana pick him up and put him on her snout, they tour a nearby human city, their bodies fully occupying several streets, one for each paw and tail, until they found a place that seem fancy enought for a date, then with a snap from ziz, the building and the city changed to acomodate the two of them, and of course changed the menu of the place to include the favorite foods of all three. And so Gustav pay back a lot of favours that night. though he didnt mind having more dates with okeana, nor having a huge girfriend for all night, after all, Okeana always had a lovely face, and now he was trapped to be in front of it for who knows many hours!