Smilke means to smile continuously with no other expression on your face.

Strawberry milk.

(n.) a person who smiles when they talk

Smokey milk breath, usually resulting from the consumption of cereal & milk followed by a cigarette prior to brushing one's teeth. Not considered to be a complement.

When you smile and have a white milk moustache. Also, applies when you smile and have come over your face.

the process of collecting semen

a word used for any cuss word.