hit on

to unexpectedly have an idea.

• Walking along the street, I hit on a solution to the problem.
• I hit on an idea.
• I hit on a good idea.
• Ken hit on a good idea.
• He hit on a splendid idea.
• Mary hit on a marvelous idea.
• Yesterday I hit on a good idea.
• Suddenly I hit on a happy idea.
• At last, she hit on a good idea.
• I hit on the terrific idea of cheating at cards by chance.
• He suddenly hit on a good idea while he was taking a bath.
• He hit on the answer to the problem as he was having lunch.
• He hit on the plan after long meditation.

to talk to someone in order to attract them sexually.

• Are you hitting on me?
• I'm not hitting on you.
• I saw Tom hitting on Mary.
• Are you trying to hit on me?
• It is easier to hit on people on the Internet than in the street.
• You know, Tom, I didn't appreciate you hitting on her after I specifically told you I was interested in her.
• Miguel, the pickup artist, rates women's looks on a scale from one to ten, claiming that he only hits on eights and up.