Fluttershy thought it would be nice if Gojira meets her parents, Nimbus and Petunia (Zephyr Breeze is currently out at that time but he already met Gojira in the recent past), so she set up a little meet-up at her house since Goji won't be able to stay on the clouds. Plus, Gojira feels better on the ground where he most comfortable...and not falling to his death. When Fluttershy’s parents came, they were a little intimated by their daughter's colt friend size and scary appearance, but after a while, they got used to seeing his gentle side and Fluttershy don't seem to be in any sort of trouble around him.

I might do the same with the other Mane 6's parents when i get around with it.

Godzilla (c) Toho/Legendary
MLP FIM (c) Hasbro
The Bridge (c) Tarbano & Faith-wolff