A person who is manipulated into the middle of being in the friend zone and in an official romance. The person who is manipulating usually keeps their tasteful sidebae interested with suggestive conversation. Often they are USED as plan B's when a primary relationship doesn't work out.
Bobby : So are Joe and Jenny going out now?
Bill : Nah. Joe's her tasteful sidebae.
Joe : Fuck you, Bill.
Tasteful Tuesday is the sister festival of Merry Monday and it originated when two people discovered their love for Jelly. The expression can be used on any Tuesday:-
Music that takes talent to play, is usually polyphonic, or at least has several varying lines and riffs included in it. Key changes and tempo changes are appreciated. Music containing one single droning drumbeat and the same three powerchords over and over is not tasteful.