"swicket" = SWKT = Spencer W. Kimball Towers
"marb" = MARB = Thomas L. Martin Building
"wilk" = WSC = Wilkinson Student Center
"DTR" = define the relationship
"VL" = virgin lips, as in never been kissed
"nicmo" = NCMO = non-committal make out
"RM" - returned missionary
Also, pretty much all terms related specifically to the Latter-day Saint (Mormon) faith or culture are used on BYU campus. It's not all that surprising to hear people quote scripture or whatever in everyday speech.