cocksure

to be very very sure, so sure that you'd bet you cock on it. From the classic British novel, Heart of Gayness

I was cocksure that I had failed that english test horribly

by tom wage September 14, 2003

sho is

Literally, "sure is". Can be used in a variety of context. Used heavily be elderly african-americans who work in industrial shipping settings

Tom- Is the package ready to be shipped?
Tony- Sho is big daddy

Tom- Tony, is there a meeting today?
Tony- Sho is T-Money

by Tom Wage September 3, 2003