The term 'Contraction Carol' is a combination of four words: EER (3 letters), TIS (3 letters), SPASM (5 letters), and AINT (4 letters). EER is an abbreviation for the word 'ENGINEER, ' TIS is an abbreviation for the word 'MATHEMATICS, ' SPASM is an abbreviation for the medical term 'SPASMODIC, ' and AINT is an informal contraction of the word 'isn't.' Together, these four words form the phrase 'ENGINEER MATHEMATICS SPASMODIC Isn't, ' which is a humorous way to describe someone who is not very good at math.