Like a crime scene in my pants.

Allan lay on the floor trying to ignore the cramps in his stomach and nibble on a jelly doughnut.

When his sister walked in and saw him laying on the floor she asked him what was the matter now?

For reply Allan just said it's like a crime scene in my pants how do you girls put up with this every month before his emotions got the best of him and he started crying and at that his sister just left him to it.