4X2 = 2 Wheel Drive 4X4 = 4 Wheel Drive 4WD = 4 Wheel Drive 5er = Fifth Wheel 5ver = Fifth Wheel AC = Air Conditioning or Alternating Current as in 120VAC AMP = Amperes ATF = Automatic Transmission Fluid BC = Brake Controller BLM or BOLM = Bureau Of Land Management BTW = By The Way CAPS = Capital Letters. Using all CAPS is considered SCREAMING CC = Crew Cab of a TV (4 Door) CCC = Cargo Carrying Capacity CF = Camp Fire CG = Camp Ground COE = Corp of Engineers (US Army) CRS = Can't Remember Shi... Dang CSR, I forgot the next letter CW = Camping World D/A = Duramax/Alison (Chevrolet or GMC) DC = Direct Current as in 12VDC DH = Darling Hubby or Husband, Dear Hubby, Da%& Hubby, Designated Hitter (baseball) Dinghy = See Toad DRW = Dual Rear Wheels Dooley = Dual Rear Wheels DS = Dump Station DSL = Digital Subscriber Line Dually = Dual Rear Wheels DP = Diesel Pusher as used in an MH DW = Dear Wife, Darling Wife, Da%& Wife, Dim Wit, Dish Washer (same as Dear Wife), Darryl Waltrip (NASCAR) EC = Extended Cab of a TV EPDM = Ethylene Propylene Diene Monomer (Rubber Roofing) ERS = Emergency Road Service ESP = Extended Service Plan FAQ or FAQs = Frequently Asked Questions FHU = Full Hook Up FIVER = 5th Wheel FT = Full Time Furry Kids = Pets FW = Fifth Wheel FWIW = For What It's Worth FYI = For Your Information G8R = Gator GPS = Global Positioning System or Satellite GAWR or GAW = Gross Axle Weight Rating GCVW or GCW = Gross Combined Vehicle Weight GCWR = Gross Combination Weight Rating GTWR = Gross Trailer Weight Rating GVW or GVWR = Gross Vehicle Weight Rating GOB = Good ol' Boy HD = Heavy Duty HH = Happy Hour IBSRV = International Brotherhood/Sisterhood of RVers IMO = In My Opinion IMHO = In My Humble Opinion IP = Internet Provider ISP = Internet Service Provider (sometimes written DISP = Da$& Internet Service Provider) HWH = Hot Water Heater (Why would you heat hot water?) L8R = Later L8R G8R = Later Gator LMAO = Laughing My A__ Off LB = Long Box or Bed of a Tow Vehicle LOL = Laughing Out Loud , Lots Of Luck, Lots Of Love LT = Light Truck tires(as in LT245 tires) MDT = Medium Duty Truck MOC = Montana Owners Club MH = Motor Home MTCW = My Two Cents Worth NCC = Net Carrying Capacity NOE - NO L NPS = National Park Service OALAEHO = Opinions Are Like A__holes, Everybody Has One OEM = Original Equipement by the Manufacturer PDI = Pre-Delivery Inspection PSD = Power Stroke Diesel (Ford} PU = Pop Up PW = Pressure Washer Qs = Question(s) RGV = Rio Grande Valley ROTFLOL = Rolling On The Floor Laughing Out Loud ROTFLMAO = Rolling On The Floor Laughing My A__ Off RV = Recreational Vehicle SB = Short Box or Bed of a Tow Vehicle SCWR = Sleeping Capacity Weight Rating SKP = Escapee SOB = Some Other Brand SP = State Park SRW = Single Rear Wheels ST = Trailer tires (as in ST225) TC = Truck camper TH = Toy Tauler TMI = Too Much Information TOAD = A vehicle towed behind a MH TP = Toilet Paper Trlr = Trailer TT = Travel Trailer TV = Tow Vehicle and on a rare occasion TeleVision TWR/TLR/VLR = Tongue Weight, Tongue Load, Vertical Load Rating VIN = Vehicle Identification Number (Serial Number) URL = Uniform Resource Locator (WWW Address) UVW or UVWR = Unloaded Vehicle Weight Rating WallyWorld = Wal*Mart WD or W/D = Washer/Dryer WD = Weight Distribution (hitch) WES = Water/Electric/Sewer Wi-Fi or WiFi = Wireless Fidelity WWW = World Wide Web (the Internet) And Finally.... HTH = Hope This Helps