1: weird thing i do when i drive: When i change lanes or merge, i shoulder check in the exact same pattern as i maintain SA in AH.
eg> i look left, look right, back, then up (yes i even look up when shoulder checking some times.) I dont even use the mirrors.
2. i have, and passengers have caught me rapid flashing the high beams to "shoot" cars in front of me. (the flashing hi beams representing muzzle flash.)
3. We have all been caught doing this: in a crowded place like a bar, mall or pub, you get weird looks from people wondering what form of sign language you are trying to use when you are using your hands to explain the planes and vectors that occured during last night's rolling scissor fight.
4. The acronym thing. Last weekend we had a family supper and when i was getting ready to leave, i said: "well great supper mom, time for me to rtb." Everyone was like "what the hell?" except for my Grandpa, a WW2 wellington pilot. he said "have a safe drive...." That was classic!