funny 
Good one.
Some good ones.
After my teenage son got in some trouble and faced some consequences I told my younger daughter
“Sometimes you have to love someone enough to kick them in the ass”
We still use it and now they have kids of their own.
Also when an otherwise intelligent family member of good friend does something exceptionally stupid {we take turns} we say in our most symp[athetic voice
“Poor little bonehead”
Orbis non-sufficit
Ok, seriously it’s Semper Gumby: Always Flexible
Refers to the endless and unpredictable changes we deal with.
A very similar motto, “Unus Orbis Non Sufficit” is engraved near the Museum of Man, in Balboa Park, in San Diego. I’ve always loved that motto! (It was meant to tie in to the discovery of the “New World,” i.e., the Americas, but it updates nicely to the space age.)
My personal motto is “I Approve, Without Reserve,” which, while mostly true, is also ironic, as it is taken from Bertolt Brecht’s “Ballad on Approving of the World,” where another motto is, “I keep approving what one can’t approve.”
“Bring Ice”
“Lube or no lube?”
If you know what you’re doing, it’s not an adventure.
That one might do for my side of the family. The official one, however, would have to be, “Be nice.” Which meshes well with the first, since being nice often means not talking about something.
We may be repressed, but by God we are pleasant.
Not in the head, Ted.
We put the “Fun in Dysfunctional” has been our family motto for over 40 years.
Better lucky than skilled.*
*The corollary is sometimes given, but always understood: The more skilled you are, the luckier you’ll be.
“Watch the fireplug”.
That would be the one right at the corner of the driveway.
I guess ours is “What goes round comes round.” Nonsense words but the meaning is clear - What you do to or for others, will eventually happen to you. A bit like that ‘pay forward’ thing.
“Hate the sin, not the sinner, but never, ever miss the opportunity to remind the sinner they are going to hell.”
Growing up in the combination of extreme family dysfunctionality and religious fundamentalism is a treat.
My dads side has a Family Crest and the motto “Over Fork Over” I have no idea what it’s supposed to mean.
Ok, just googled it … something about stashing a prince.
Actual motto from the family crest hanging on the wall: Nil Conscire Sibi (nothing against oneself; the closest I can come in translation).
Unofficial motto: carpe cerevisi: seize the beer
If we had a family motto, it would probably be “We don’t need no steenkin’ mottos!” but since we don’t need no steenkin’ mottos, we don’t have a steenkin’ motto, not even that one. 
On one side: no matter how humble your home, it should always be clean. (Which was more about having pride in what you have even if you are poor since we kinda were.)
Other side: never let a guest leave hungry. (Which is interesting since this side of the family had even less. They would often feed guests food and the children would go without. I would never take it to that extreme but certainly you will find abundant good food if you are invited to my house.)
My family has a way of collecting sayings, including “Don’t worry needlessly” and “Don’t drive through standing water.”
But I would say our motto is “Packages can be deceiving.” It started as a joke at Christmas, but it’s come to fit us pretty well. Anyone wanna translate that to Latin for me?