have on

verb6

1. •
   To be wearing.

   • She has on a nice red shirt and skinny jeans.
   • I was wearing a bathrobe and had nothing on underneath.
2. •
   To have turned on (an electronic device).

   • I didn’t hear you because I had the radio on.
3. •
   (UK, informal) To trick or deceive deliberately; to play a prank on.

   • Are you having me on?
   • Fifty quid for that piece of junk? He's having me on he is!
4. •
   (UK, informal) To have (something) scheduled.

   • So what do you have on this weekend? I have nothing on myself.
5. •
   (informal) To possess evidence of wrongdoing regarding (someone); to press charges on (someone).

   • They have two bodies on me.
6. •
   To possess at the point of arrest.

   • I had some pills on me when that cop picked me up.