Option 1: You throw it into Waveland Ave for the ballahwks, and get the s*** beaten out out of you.
Option 2: You keep it to make $$$, and get the s*** beaten out of you for not throwing it back
Option 3: You go with tradition, throw it back, and get the s*** beaten out of you for throwing it away.
Option 4: You're a Gaints fan there, you catch it, and you get the s*** beaten out of you for going to root for the enemy.
True story at a Cubs game I went to, Cubs-Pirates game, sat in the bleachers. This is a few years back. Aramis Ramirez (when he was still w/ the Pirates) hit a HR. A Pirates fan caught it, about 5 rows below me. Didn't throw it back. This Cubs fan who had been crazy all game, shirtless, drunk, called the beer man a f*****, was told by his wife to sit down and behave himself, beat him up, for not throwing it back. Pulled the ball loose, threw it to home on a 1-hop. Got ejected. Before he left, he's like "ALL RIGHT! HOUSTON BEAT THE s*** OUT OF ST. LOUIS!