A "Boudreaux Back Rub" is when you are standing or walking, and a chick jumps on you from behind, pulls out your cock, and starts to give you a handjob from the piggyback position. It's named after the genius who conjured this move up in an inspired dream...
Dude, I was just walking to the bar and she came out of nowhere like a ninja and gave me a Boudreaux Back Rub... it was totally tits!!!
A back rub is usually done for someone whom has a stiff back, or just wants to relax. But in some cases a back rub can turn into something sexual and may make a mistake aka your child.
A massage performed by a man to another person in which the massager stabs and or presses his erect member against the back and or buttock of the massage reciver. Certain styles also involve heavy, wet breathing at close range on the back of the neck.
An event between a man and a women, a man and a man/women and a women (if gay / lesbian), that sould but doesnt always result in sex... the words rub my back are a sign
your sittin on the couch watchin the game and your wife says "hun will you rub my back" she does want a back rub but she's accually askin you to woo her so that it can end in sex, if not done correctly it will end in you sleeping on the couch watching a recap of the same game you watched earlier and not knowing what got you there
An extended, often elaborate array of male-on-female foreplay that fails to end in copulation. The common opening move is for the man to offer the woman a back rub, followed by a series of maneuvers that may or may not include a leg massage, teasing of the upper ass around the pantyline, a slight grazing of the sideboob, and as a last resort some aggressively handsy spooning. Crippling, fetal-position blue balls often results, remedied only by vigorous, albeit lonely and pathetic masturbation.