noun
usual group of friends; squad; crew
Slang abbreviation of いつものメンバー. Used among young people to refer to one's regular circle of close friends.
今日もいつメンでカラオケに行った。
I went to karaoke with my usual crew again today.
あのカフェはいつメンのたまり場だ。
That café is the hangout spot for our squad.