vvv 'Cos certain indicators are missin', ma'am.
On the interwebz, 'humour' and 'teasing' do not make good bedfellows. It's an artificial environment where body language and tone are lacking, therefore sterile and aggressive by nature. So when lacking adequate emoticons and a particular structure, it sounds like words of spite, most often.
Or at least, it's easier to see it as spiteful.