I've been asking people if they remember condoms being referred to as "dubes." I recall this being common parlance in the 80's when I was a teen. Everyone I ask says, "No! Doobs are joints!"
Which I knew. I'm not a complete moron.
So I googled it today on a whim. And the urban dictionary online says this of its fourth "doob" reference:
condom...used by adolescents in Northern Canada
I looked in my brother's wallet and I found a DUBE!