"Check out this awesome custom ROM for Pokémon Fire Red (US version) that includes Squirrels as a Pokémon! The ROM is exclusive to GBA and features a ton of new content, including Squirrels as a playable Pokémon. Has anyone else tried this ROM? What do you think of the new features?"

You're looking for a post related to Pokémon Fire Red, specifically a US version, and a mention of Squirrels in a GBA ROM exclusive. Here are a few possible posts:

"Hey fellow trainers! Did you know that in Pokémon Fire Red (US version), Squirrels are not actually a part of the game? However, if you're playing a GBA ROM hack that includes Squirrels as a Pokémon, it could be a fun twist on the classic game! Who else loves playing ROM hacks with exclusive features?"

"Hey gamers! I'm playing Pokémon Fire Red (US version) on my GBA, and I was wondering if there's a way to encounter Squirrels in the game. I know it's not an official part of the game, but I've heard rumors of ROM hacks that include Squirrels as a Pokémon. Has anyone tried a ROM hack with Squirrels in Pokémon Fire Red?"