They've been known in the past for being more open about their sex lives to the press-but Jenny McCarthy and Donnie Wahlberg could find themselves speechless when their amorous activities may need explaining to her son on Donnie Loves Jenny.

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"You want to make our own bom chicka wah wah?" McCarthy asks her husband in a preview clip for the Feb. 4 episode.

Naturally, Wahlberg says yes as the two disappear behind their bedroom door-but aren't exactly quiet-as their laughs and giggles are heard amongst banging sounds and the handle on their door jiggles.

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However, the following morning, they'll learn they weren't as quiet as they thought, after McCarthy's 12-year-old son, Evan, starts inquiring about what e heard while he was trying to sleep the night before.

"I heard banging," he says in the clip.

"What kind of banging?" Wahlberg asks.

"Like this," Evan says before smacking his hand down on the counter twice.

Wahlberg and McCarthy clearly realize just what Evan heard, and share a nervous scared look as a result, before McCarthy begins attempting to find logical reasons for the noise.

"Maybe it was the pipes," she says.

"I don't think it was the pipes," Evan replies.

After he shoots down the logical explanation, McCarthy is at a loss-and results to anything she can think of to keep from having to explain the truth to her son.

"I think we have ghosts," she says.

Donnie Loves Jenny airs Wednesdays at 10:30 on A&E.

Tags: jenny mccarthy Donnie Wahlberg