Swing both ways
Definition 1 of 2
Pro Tip 1/3Cultural Sensitivity
Understand that discussions about sexuality can be sensitive. Use the phrase respectfully when talking about sexual orientation. 
When I learned he swings both ways, I respected his privacy and didn't pry.
Pro Tip 2/3Ambiguous Meaning
The expression might be unclear without context, so ensure clarity when you use it to refer to sexuality. 
She mentioned she swings both ways; I realized she was referring to her bisexuality.
Pro Tip 3/3Casual Conversations
This phrase is informal and best suited for casual or personal conversations, not formal settings. 
At the party, he casually said he swings both ways.