I'm not to sure if its normal but my bottom front teeth about 5 of them they are very over crowded and have been known to click.....it frightens the life out of me at times cause I'm convinced they're going to drop out.
Not sure on that but I will tell you with this new temp crown I have, that's all my teeth have been doing is clicking! I hate it!!
They said the teeth were clicking because they overlapped and the crowns bite was off, so hence the answer to your question is most likely yes they definitely can click.
lol, well when i bite down my top front teeth (which overlap) onto my lips i hear a slight click, it feels like movement thats why it scares me but i heard somewere this happens but you cant beleive everything you hear i suppose.