"Save some for the honeymoon..."

SirLouie thought this was worth mentioning said
1

I have a TV or movie scene in my head, but I can't place the actors / characters.

Guy is in bed, under the covers, having just / recently awakened. A vague lump moves underneath the covers near his legs. Guy starts exclaiming with delight, oohs and aahs, at one point saying "Save some for the honeymoon!"

Cut to the woman who we were to have presumed was under the covers, only she enters from the adjoining room. "Who are you talking to?" or similar, she says. Befuddled guy peeks under covers, and the pleasure-inducing subject scampers away (likely a cat or a dog).

I cannot remember what this scene is from. I want to say the guy is either Jim Carrey, Seann William-Scott, Ben Stiller, or Justin Long, but I am not certain.

This situation may have occurred many times in many movies / TV shows, but the specific one I am thinking of must include the (or a similar) line regarding the honeymoon.

Can anyone help?