yeah, right! idiom (also oh yeah?); (also yeah, yeah)      
 (用于当不相信某人所说时)
used when you do not believe what someone has said
  "I always miss you when I go away ." "Yeah, right!" “我旅行时一直很想念你。”“哦,当真?” 
 "Anyway, we're just good friends." "Yeah, yeah!" “无论如何,我们只是好朋友。”“哦,真的?” 
 "I can run faster than you any day!" "Oh yeah?" “我什么时候都比你跑得快!”“哦,是吗?”