A mother I knew was going through a really unpleasant time with a stroppy teenage son.

我认识的一位母亲因为十几岁的儿子脾气暴躁、任性叛逆而过得很不开心。

The gas people haven't called to repair the cooker so I shall have to get stroppy with them.

他们还没有叫煤气修理工来修理煤气灶，我怎么能不生气。