Commonly-used American Slang
スラング: fess up
 fess up  =to confess, to admit the truth,  
意味: 白状する 
- fess up 例文:
 - You better fess up that it was you who stole her watch.
彼女の腕時計を盗んだ事を白状しろ。 - Come on fess up. I know you did this.
さあ、白状しなさいよ。あなたがこれをやった事は知ってるんだから。