toss something back and forth
1. Lit. [for two or more people] to toss something to each other alternately. Carol and Kelly tossed the ball back and forth for a few minutes. We will toss the ball back and forth until we get tired.
2. Fig. to trade remarks, quips, insults, etc. They tossed insulting remarks back and forth. Walter and David spent the evening tossing quips back and forth.