The first man searches his pocket, and finds some Mistletoe, so he is allowed in.
The second man presents a nutcracker, so he is also allowed in.
The third man pulls out a pair of panties.
Confused at this last gesture, St. Peter asks, "How do these represent Christmas?"
The third man answered "They're Carol's."
There's plenty of room for all God's creatures. Right next to the mashed potatoes!