There was one time in grade school when I went to the bathroom and the fire alarm went off.  I had a hard time buttoning up my pants and had no choice but to walk out with my class holding my pants together.
There was one time when I was in grade school and the fire alarm went off when I was in the bathroom.  I had a hard time buttoning my pants up and had to walk out holding them together in front of my classmates.
user
Oh my god, that must have been so embarrasing! Was there actually a fire?
assistant
Nope, it turned out to be a fire drill.  Everyone was laughing at me.  It wasn't one of my prouder moments.
user
Its okay, at least now you can look back at it as a funny moment.
assistant