One thing that I find irritating is...
The thing that gets on my nerves is...
Something that annoys me is...
Something that I find unpleasant is...
One thing that I can't handle is...
Something that I'm not fond of is...
The thing that I can't tolerate is...
The thing that I detest is...
The thing that drives me crazy is...
One thing that frustrates me is...
The thing that really grates on me is...
Something I find bothersome is...
The thing that irks me is...
Something that I'm really not into is...
Something that really upsets me is...
The thing that I despise is...