For those that remember Daniel Tiger's Neighborhood (a Mister Rogers animated spinoff), Daniel Tiger's special way of showing affection was to do an Eskimo kiss (the act of pressing the tip of one's nose against another's) with someone, and saying "Ugga Mugga".
"Ugga Mugga" is said to be Daniel Tiger’s way of saying "I love you."
On the original Mister Rogers' Neighborhood, in the Neighborhood of Make Believe, Daniel Striped Tiger would lovingly rub noses with Lady Aberlin and say "ugga mugga!"
What are the most common gestures you'll see daily? Westsidetoastmasters.com have listed 13 of them. See them here