Geordie way of enthusiastically saying yes! Everyone is "man" even if you identify as a penguin! the why eye is like a "well duh obviously" way of saying yes!
Refers generally to cannabis-based therapy but could also refer to other psychedelics, or more broadly to embracing nonchalance. Pending context, the expression could be an invitation to others to partake in an activity, or a declaration of indifference to one's carefree decision making. The expression is generally used without punctuation, similar to Marvin Gaye's 'What's Going On', and is also seen abbreviated to WNM.
"You guys down for some Why Not Man when we go hiking later?"
"I just bought a pair of $400 cowboy boots, Why Not Man"
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."