The commencement of menses or other inconvenient female reproductive malady that causes discomfort or distress. It is a portmanteau of "vagina" and "agida", which itself is a misspelling of "agita", or Italian American slang for gastric distress.
Sure guys, I can go bowling and drinking tonight. The wife has vagida and I won't be missed.
by Bone Daddy Jive May 01, 2012