The 'Transformers' star joined the micro-blogging site last week but decided it was too much commitment and took to her Facebook account to reveal she had removed herself from Twitter.
She wrote on Thursday: "Some of you may, or may not have noticed by now that my Twitter account has been shut down...
"I thought that 2013 might be the year that I finally blossomed into a social networking butterfly... but as it turns out I still hate it.
"Love you guys but I will just never be that girl. Facebook is as much as I can handle. #I'm Sorry (sic)."
Megan's decision to join the site came hours after "RIP Megan Fox" was trending, but she made no mention of the web death hoax.
The 26-year-old actress also announced her decision to join Twitter on her Facebook page, writing:
"Against my better judgment, I have finally joined Twitter. Every possible version of my name is already in use so for now my Twitter handle is https://twitter.com/MeganFox516."
She later changed her Twitter handle to @MeganFox.