Noun. 2. An extremely sketchy or shady individual. 3. A piece of shit.
1b. I got keithed last night when I walked to my car and found it on blocks.
1c. After I bought that shitty magazine subscription from that pushy door-to-door salesman, I felt like I got keithed.
2. If you keep staring at girls with that shady grin when you are trying to hit on them you are going to turn into a keith.
3. I went to the can and dropped a huge keith.
Woman: (fuck) I love you too...
See also: Someone in whom's heart, thoughts and arms one wishes always to be <3 (Totally sappy. Deal.)
Friend #2: I know. Even when she's not talking about him, you can tell she's thinking about him, because she's smiling real wide.
Friend #1: Well, he's a great guy! He's a real Keith!