Old-timey, folksome, or religious nutjob's "polite" or naive way of explaining what a boner, visible underneath clothing is. It implies that the speaker doesn't believe sex or sexual desire should happen outside of marriage; so only a husband would have a boner. But "boner" or "erection" are too scandalous and obscene to say.
by anonnigh October 01, 2013
This expression comes from the horror movie Cabin in the Woods, released in 2011. Basically, a "husband bulge" is an erection.
by BeccaBess August 21, 2012