French phrase
Attention, ~ peut être tabou.
Meaning
Warning, ___ may be taboo.
When to use it
Warns that something may be taboo. It gently flags sensitive topics that may be best avoided.
Example dialogue
Attention, ce sujet peut être tabou.
Warning, this topic may be taboo.
D'accord, je n'en parlerai pas.
All right, I won't talk about it.