have a bee in one's bonnet → έχω τη λόξα μου, έχω έμμονες ιδέες, έχω λόξα, έχω ζήτημα, έχω ένα ζήτημα, είμαι κολλημένος, είμαι κολλημένη, έχω κόλλημα, έχω φάει κόλλημα, έχω κολλήσει, δεν μπορώ να ξεκολλήσω, έχω μανία, έχω κόλλημα

[wings]

Αντιγράφω από το Random House:

have a bee in one's bonnet,
   a. to be obsessed with one idea.
   b. to have eccentric or fanciful ideas or schemes: Our aunt obviously has a bee in her bonnet, but we're very fond of her.

[crystal]

έχω λόξα, έχω ζήτημα, έχω ένα ζήτημα, είμαι κολλημένος, είμαι κολλημένη, έχω κόλλημα, έχω φάει κόλλημα, έχω κολλήσει, δεν μπορώ να ξεκολλήσω

To have a bee in your bonnet.
For example:
She's got a real bee in her bonnet about that new advertising campaign, she's even phoned the ACA!
To be obsessed about something.
http://www.learnenglish.de/vocabulary/clothesidioms.htm

have a bee in your bonnet
to talk a lot about something you think is important Martin has a bee in his bonnet about recycling.
http://idioms.thefreedictionary.com/have+a+bee+in+bonnet