Actually, "welp" is a term derived from the word, "Welpiontis" from the ancient country, Traloitia. It means "homosexual woman". The ancient Romans brought it into their language after taking them over in 420 B.C. and changed the meaning slightly to mean, "Homosexual mother". Then, through trade with the Italians, the word was brought into the English language and changed to the word, "welp", which means, "ur mom gay".
"Welp"