Das Wort des Tages

jemandem auf den Wecker fallen/gehen  to drive somebody up the wall, get on somebody's nerves (lit., "fall on the alarm clock")

Ulrike fällt mir auf den Wecker.
Ulrike drives me up the wall/gets on my nerves.

Related: der Wecker alarm clock, nerven to get on sb's nerves, Das nervt! That's getting on my nerves!, Du nervst! You're bugging me! You're getting on my nerves! (Reminder: The German v sounds like an English f.)