Sentence 1: Brad's girlfriend bought Brad a pair of Valentine's boxer shorts. 
 Sentence 3: One day when he was low on underwear, he wore the boxer shorts 
 Sentence 4:  Brad got injured that day, and some hospital staff saw his underwear 
 Sentence 5:  Brad started to believe that the boxer shorts brought him bad luck 
 Option 1: Brad thought it would be embarrassing to wear them so he threw them out. 
 Option 2: Brad thought it would be embarrassing if anybody saw them.