Ghost of Houdini

When a man is lying in bed on his back and he gets a hard-on, it rises beneath the sheets appearing as a ghostly figure in the morning light. True to the spirit of Houdini, the ghostly erection is likely to disappear soon after it arrives, possibly into the woman beside him.

Jane: Baby, look at the sheet near your crotch!
Kevin: Shh, baby. It's the ghost of Houdini.
Jane: Really? Is he friendly?
Kevin: Oh yeah. I think he wants a kiss.
Jane: Okay.