One of my friends has recently returned from a 9 month maternity leave and has discovered a few new faces amongst the people in her group.
She smelled one the other day when she went in the kitchen, actually his BO was so bad, she jumped as she was caught off guard by the odour. He thought this was really funny that she jumped (apparently he was oblivious to his stench).
And as he walked by her he gave her a "friendly" punch in the shoulder. But actually hit her hard enough to hurt. She said as much to him, he just laughed and walked away, leaving her standing there with a sore shoulder amoung the Eau de BO.