the day i became frustrated with a rather boisterous individual in the computer lab

Today while sitting in the library (composing blogs), a certain individual thought it necessary to use profane vulgar language which i did not appreciate the least bit. The young man proceeded to use his cell phone through the entire time that he spent on the computer. I assume he was in a very intense heated conversation with one of his parents, rather this is true or not i am indifferent. Simply the fact that he chose to ignore all signs asking students to refrain from using all forms of telecommunication devices in the lab, made me somewhat annoyed. From now on i will come prepared to face such an abnormal situation, i will bring earphones; thus eliminating all background noise allowing me to study in peace.