I had to force myself to laugh , and there were about 3 - 4 Brown Bag fouls . Everyone 's minds were in the gutter . It was ridiculous .
Why might have I forced myself to laugh ?
Pick the best answer from the following options:
- Because i do usually enjoy clean jokes .
 - Because i do usually enjoy dirty jokes .
 - Because i do n't usually enjoy clean jokes .
 - Because i do n't usually enjoy dirty jokes .


Because i do n't usually enjoy dirty jokes .