That one friend in your squad that's super responsible and almost over-protective of them. Usually every friend group has a mom friend, and if you think your squad doesn't have one, then you're probably the Mom Friend!

Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term “second string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A “Second String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed

That one friend that's pretty much just a small version of a mom, you know, like all caring and considerate

That one friend who actually cares about you, helps you study and is also your guardian angel when it comes to clubing and partying.

that one friend that acts like a mom and acts like they know everything when in reality they do everything they tell u not too

A calm friend who you can rely on, usually an older member of your friendgroup
Usually called "Mom" or "Mother" as a nickname by younger members of the group

It's the girl you're dating, who acts like your mom! So much caring all rolled into one. She'll make sure you get an A on that paper, all while baking you cookies and giving you head.