Idiom: Under Water Basket Weaving –
is an idiom referring in a negative way to supposedly useless or absurd college or university courses and often generally to refer to a perceived decline in educational standards.[1][2][3]
The term also serves as an intentionally humorous generic answer to questions about an academic degree. It is also used to humorously refer to any non-academic elective course, specifically one that does not count towards any graduation requirements.