This must be the morning for George and Lynne. George is brushing his hair and Lynne wants tea; if this was evening it would be a strange ritual. As George is brushing his hair then we can also assume he has had his shower and is just about to get dressed.
Lynne's ire comes from the absence of tea. She is extremely ratty until she has had her morning fix. She throws the pillow with such venom that it causes George to drop his brush. George is lucky that the pillow is the first thing that Lynne could grab. If it was the alarm clock, he could be seriously hurt. To avoid further injuries, George should invest in a teasmaid.
On closer inspection, George is still wearing his pyjama bottoms. Has he even had his shower? Where has been this time? Lynne expected tea so perhaps George has been downstairs. His alibi is the hair brush that he holds, but he'll have to shower before he leaves the house. George has been downstairs making an important phone call that he wants to keep secret from Lynne and, more importantly, us.