Just... Cuddly! And sweet! It could be:
1) A puppy/kitty/any other baby animal (human babies
included)
2) To a girl, the short, plumpish guy sitting across from you with a nice face and an
innocent attitude
3)
I have no idea as to what guys consider is cute.
Cute can also be used to describe some random article of clothing/makeup by morons, as in:
1) OMG that skirt is so cuuuuute!
2) OMG that lipstick is so cuuuuuute!