#pj

What does "pj" mean?
phose_japan, ptk_japan, PHOS_JAPAN, PlitvickaJezera, ParkJinyoung, pepi_jr, PendudukJitra, poorJeff, PetalingJaya, promote_jualanku, pvJKT, PremiosJuventud, polmanwithJILC, praiseJesus, pressedpowder_jafracantiknitha, PrimroseJo, ParkJimin, punisher_jeeps, PrivateJet, phos_japan, PhilipsonsJewelry, PunisherJeeps, PrincessJasmine, Palm_Jumeirah, pkt_japan, PTK_JAPAN, PhotoJournalism, PhotoJournalist, PickledJalapenos, ParkerJames

pj-o 1015864 pj-s 1475939 pj-m 71377 pj-l 20485 pj-c 20311 pj-b 16159 pj-j 15933 pj-day 96967 pj-set 39709 pj-orp 39678 pj-ibabsolute 80619 pj-party 90877 pj-amas 24296 pj-anic 32791 pj-sallday 46235 pj-fc 5970 pj-liguori 42423 pj-kr 6267 pj-ofandom 29965 pj-harvey 22439 pj-ligouri 18237 pj-ocosplay 26656 pj-morton 15333 pj-2016 6061 pj-thekick 13211 pj-tour2016 8725 pj-masks 7618 pj-bop 3064 pj-ofanart 5986 pj-rtb 2574 pj-squad 4039 pj-followtrain 7852 pj-2013 2241 pj-lookchiquis 3864 pj-sweetcouple 4337 pj-sfs 963 pj-fotografico 2618 pj-190 798 pj-lookjonatansanchez 1135 pj-clapp 934 pj-milan 877 pj-ligourirp 1061 pj-y1234 806 pj-bestial 918 pj-philly 819 pj-ogiveaway 807 pj-s2015 539 pj-nominaciones 955 pj-cyrus 714 pj-b2014 713