"Laps räägib siis kui kana pissib"
"Kids speak when hens pee". And hens don't pee. You get it.
"Jumal hoiab lolle ja joodikuid"
"God cares for idiots and drunks". Mostly everyone in Estonia has a colourful family with a good percentage of people who really love to drink. So I understand this saying because I remember times when I was little and the whole family was looking for some relative who was so drunk that they had slipped into the roadside ditch with their bike and fallen asleep, in the winter, wearing a t-shirt. In the morning they would return home, happily riding their bike.
"Ära hõiska enne õhtut"
This one is a true gem, warning you to not get too happy before the night is over, because everything might still go totally wrong. Celebration is definitely something a person should have in extremely small doses, if ever. Like during Midsummer eve, "Jaanipäev", which is a day when every Estonian is really, really happy (and super drunk.)
"Rääkimine hõbe, vaikimine kuld"
"Talking is silver, silence is golden". Another one from Estonians where they tell you that expressing yourself is basically useless. I think we have at least ten different quotes which are about shutting the heck up.