英语语段编写使用所给的词语,编写一个意义相对完整的语段.提示词：shopping,drinks,forget,money

Last sunday,I went for shopping in a large shopping mall.After several hours,I felt so tired that I wanted to buy some drinks.However,after I received the drink,I forgot to pay for it.The seller mentioned me,so I quickly give him the money,but I felt very embarrassed.