A I think because of the last sentence or word loney single sock waiting..which sounds like he washed a Pair of sock but actually only washed a Sock and lost another pair...Which he was searching
hmm.. the author used a metaphor so you would have a better understanding on how the horrid pain in their left side felt. metaphors allow creativity and can paint a clearer picture of what you describe. they help express certain emotions and can help you better understand something.
