This just in, courtesy of a “Silly Science Fact” on the back of a mini Three Musketeers bar:
I can’t. Can you?
Yes.
ACK – I’m jealous. :mad:
Did you have to go find a mirror to be sure?
I can too. I learned it was a genetic trait back in high school biology.
Since this is basically a poll . . . I’ll move it to IMHO for you.
Cajun Man ~ SDMB Moderator
Yes, and no, you don’t have to look in a mirror. Your lips, gums, and teeth will all send the “uh-oh,-there-she-goes-curling-her-tongue-again” message to your appropriate brain cells.
I can, my brother can, my dad can but mom can’t. and it causes her no little anxiety! 
Thanks, Cajun Man. I was of two minds where to start it, but it seemed mundane and pointless enough to qualify for MPSIMS – if not downright silly. 
I can curl my tongue up into so tight a “u” that the top meets and it becomes a “marquise diamond” type of shape.
I can do it too!
In an ideal world, this skill would add a delightful je-ne-sais-quoi to my dating skills. 
If you can’t do it, what does your tongue do? Just lay flat? 
Basically, yeh. I’ve tried and tried, but it just quivers futilely. About the best I can do is get it to sag a smidgen into a crease down the center, but I have to lay a finger on it to get even that.
At least I can stick it out and make the tip point up and down.
ETF, I can’t do that.
So… how you doin’ ?
[sub]Sunspace hopes ETF is of a compatible gender and inclination…[/sub]
I’m doing fine, Sunspace. While I’m generally held to be compatible, Eddy, Teddy and Freddy are the truly pattable ones.
The boys and their avatar do not share gender, or inclinations beyond a preference for eating well and often, and napping in warm places.
Me too. So how you doin’?
IIRC, it’s a dominant gene so if either parent can roll their tongue, chances are it’ll get handed down.
Prrt? Mneowrr… mrrt!
Hiss-SPIT-hissssssss
Oh, sorry; haven’t had my morning coffee yet.
miewp?
Yup, another curlable-tongue owner here.
I can curl it into a tube. Try as I might, though, I can’t seem to whistle through the tube.
Oh, don;t bring up whistlint now! I can’t whistle through my teeth and make that wonderful piercing shrill audible-for-miles sound. Just the feeble fweep of a lip-pursed whistle.
Now I’m even more envious – I feel SO inadequate… 