If I want to say that: I will be listening to the lecture being delivered carefully and won't be busy scratching body parts, hair or beard,etc showing that I am not attentive to the lecture, can I say:
I will avoid playing unnecessarily with clothes, body parts, or hair of beard or head...
What image appears in a native's mind when he hears the sentence mentioned above?
Secondly, would you native add 'hair of' before the word 'beard' if you meant that you are scratching beard? I mean, doesn't the word 'beard' itself mean 'hair of beard'?