A cursed item in Mario Kart made by satan himself that targets you in first place, possibly ruining your race and friendships; Hell in the form of a Mario Kart item
"That BlueShell was absolute bullshit!"
"If you use that fucking Blue Shell, I will beat the fuck out of you
Song selling takes place when a singer-songwriter earns money in exchange for the rights to use his or her original music, often to a (more) famous, or up-and-coming, recording artist.
If a singer-songwriter has written a catchy song but seems to fall short on vocal or instrumental ability, a listener might say, "you should sell your song." Hearing this can be extremely disheartening for singer-songwriters, especially those who are still developing their talents, or have not yet enjoyed their fifteen minutes of fame.
Why does song selling even exist? Any band or singer who is worth their weight can write their own songs.