Sbm 32 - Recommended Studying http://sbm32.16mb.com/story.php?title=recommended-studying-4 Like many on-line communities, reddit has its own language, which you'll know right away. Redditors tend to speak in acronyms that includes: "op," "til," mama," "ama" ... nicely, "op" just refers to the "initial signboard" in a thread. Sun, 26 May 2019 04:35:46 UTC en