"FMSphotoaday" stands for "fat mum slum." It is when mothers post pictures of themselves after weight loss, whether it be from childbirth or exercise.
While some people refers it to InstaGram. The most common acronym for InStaGram is "Insta" or "ISG".
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On Instagram, if you are mentioned, it means the other person has tagged you to include you in their conversation.
Screeny for screeny
It may mean traveling or biking.
it means direct messages
It means tell me more
women crush Wednesday
It stands for Double Tap on Instagram. Meaning they want you to like the photo by double tapping/clicking on it.
In text code, "ig" means I guess.Instagram
CWD means comment when done.
That their account is private.