He's not embarrassed to kiss his wife he just embarrassed about getting caught planting a surprise for her and then thinks she's pulling something on him by making it a challenge that's why he stops, and can't figure out if she's joking about being asleep or not. Then he is worried about getting caught out of bed with presents ruining the illusion of Santa for his daughter so he gets back in without kissing her. Please could some of you learn to read social situations...