Swings both ways

A person are who enjoys having sexual relations with both sexes. It refers to both having sexual relations and relationships with both sexes.

Girl: Oh i heard you were thinking of hooking up with Anna
boy: yeah shes hot but i was thinking of calling mike
Girl: OH! you swing both ways.
boy: only for fun plus the sex is good.
boy: dave also swings both ways
Girl: no, way
boy: way!

Have it both ways

Achieve two mutually exclusive objectives at the same time, especially in a selfish manner.

Reneé wants to have it both ways—by having her boyfriend to live with her. It involves paying on all her bills (instead of their bills) and pay child support on their daughters.

goes both ways

Has no preference for either sex, will have sex with either.

GayGuy1: "Mmmm, look at that sexy hunk of meat over there, I'd love to get deep inside of him. Too bad he has a girlfriend."
GayGuy2:"Take a chance bro, I know for a fact he goes both ways."

go both ways

a bisexual girl, she fucks men and women.
2. a heretalsexual girl but will have sex with other girls for plesure or fun.

aye i'm bout to go have a threesome with my girl and Ashley she go both ways.

have it both ways

to profit from two positions that are polar opposites

Contrary to popular belief, the powers that be can't have it both ways with drug laws.

i've heard it both ways

A good way to sound witty after you have just been proven wrong.

Shawn: "Gus please. Don't be Harry Potter and the Prisoner of Marzipan."
Gus: "Azkaban."
Shawn: "I've heard it both ways."

the door swings both ways

It works both ways - and not just the way that the person you are saying this to is describing it.

Student: "You should respect my rights, you know"

Teacher: "And you should show me some respect, if you want that. The door swings both ways."