bffr Share definition Flag stands for be fucking for real. used when you want someone to stop lying or to get in touch with reality. person 1: yeah im not like other girlss in different. person 2: gurl- bffr 💀 bffr by heluvsme_andonlyme<3 December 21, 2022 0 0 Get merch Get the bffr mug. Buy Now — $32.95 See more merch