How about...?
1. INFORMAL used to make a suggestion:
How about the cinema tonight?
How about going to the cimena?

2. used when asking someone about a different thing:
You don't eat meat, do you? How about fish?

[TahlilGaran] Advanced Learner's Dictionary ▲

how about
how about (someone/something)
I am surprised by someone or something.
How about that guy who was arrested for riding his bicycle on the expressway?

Usage notes: usually intended to get someone to say what they think
how about (something/doing something)
I suggest this.
“What time should I pick you up?” “How about five o'clock?”

How about going for a drink after work?

how about (something/doing something)
I suggest this.
“What time should I pick you up?” “How about five o'clock?”

How about going for a drink after work?

[TahlilGaran] English Idioms Dictionary ▲

how about something
how about (someone/something)
I am surprised by someone or something.
How about that guy who was arrested for riding his bicycle on the expressway?

Usage notes: usually intended to get someone to say what they think
how about (something/doing something)
I suggest this.
“What time should I pick you up?” “How about five o'clock?”

How about going for a drink after work?

how about (something/doing something)
I suggest this.
“What time should I pick you up?” “How about five o'clock?”

How about going for a drink after work?

[TahlilGaran] English Idioms Dictionary ▲

How about?
1. what is your feeling/thought/desire regarding something?
"She is not interested in the job but how about one of her friends?"

2. will you have something or will you agree to something?
"How about some coffee before we go to work?"

[TahlilGaran] English Idioms Dictionary ▲

how about
interrog.
■ Used to ask for a decision, action, opinion, or explanation.
1. Will you have or agree on?
How about another piece of pie?
What about a game of tennis?
How about going to the dance with me Saturday?
2. Will you lend or give me?
How about five dollars until Friday?
What about a little help with these dishes?
3. What is to be done about?
What about the windows? Shall we close them before we go?
4. How do you feel about? What do you think about? What is to be thought or said?
What about women in politics?
How about this button on the front of the typewriter?

[TahlilGaran] English Idioms Dictionary ▲

how about someone
how about (someone/something)
I am surprised by someone or something.
How about that guy who was arrested for riding his bicycle on the expressway?

Usage notes: usually intended to get someone to say what they think
how about (something/doing something)
I suggest this.
“What time should I pick you up?” “How about five o'clock?”

How about going for a drink after work?

how about (something/doing something)
I suggest this.
“What time should I pick you up?” “How about five o'clock?”

How about going for a drink after work?

[TahlilGaran] English Idioms Dictionary ▲