I can’t and it seems to be a “rare inability”.
According to Springer:
Tongue rolling is the easiest tongue movement which can be done by 83.7% of the participants, and only 9.9% misjudge their ability to do so (Table 3b). The cloverleaf is the hardest movement to carry out; only 14.7% of the participants could do so.
https://link.springer.com/article/10.1007/s00455-020-10195-y#:~:text=Tongue%20rolling%20is%20the%20easiest,the%20participants%20could%20do%20so.
More random questions:
https://www.datebytype.com/blogs/view/160/Are-you-Rh-negative
Yes I can
I am O Rh negative. Not sure exactly what you mean by rolling ones tongue but I can tie a knot in a cherry stem in 20 seconds or less if that counts.
I can roll my tongue