This article is a term which also includes words related to school sphere, it is about student–teacher relationships, about oral and written students’ statements. SEN students utilize a very special way of communication. They take part in public life, they communicate in an oral way. However, their communication is limited, inaccurate and erroneous. The cause of such verbal misbehaviour is not due to language negligence but due to unawareness of being incorrect in expressing themselves. Their unawareness is so broad that it leads to cases of involuntary humour, unintended by the speaker. Involuntary humour found in the written works of SEN students has been analysed in this paper as well as the language behaviour as the basis of such involuntary humour.