Lacey's A Lapdancer (2006)

Try to Resist.

Betty and Tracey can't figure out what makes Lacey's marriage so good. After some sleuthing, they find that Lacey moonlights as an erotic lap dancer for her husband. After revealing Lacey's secret Betty and Tracey spice up their own love life by surprising their husbands with a seductive show that they will never forget.