Consider, my friends, the orbit of WTF under the action of S₃.

• WTF = What the fuck. Alternatively, World Taekwondo Federation.
• FTW = For the win. Google suggests Fort Worth Meacham International Airport.
• FWT = A sucking noise made with the mouth. Also, Flimsy West-African Textiles.
• WFT = Whale Fighting Tactics. An international martial art created in AD 2101 to eradicate all whales, who turn out to be the masterminds of the illegal seizure of all your base.
• TFW = Triboluminescent Fragmentation of Wint-O-Green-Life-Savers. Shorthand for well-known effect that chomping on Wint-O-Green Life Savers in the dark makes sparks.
• TWF = Tricky War-time Fortifications. Famously used in World War I in the form of bunkers.