In the Facebook group Mathematical Mathematics Memes, someone posted:

Tell me your area of specialization by writing a poem containing what you studied.

In the past, I’ve tried and failed to come up with a succint summary of my thesis for lol my thesis. But my poem seemed to be popular:

Roses are red
Violets are blue
A random eigenfunction of the Laplacian on the flat torus of dimension $d$ with eigenvalue $\lambda$ asymptotically has an expected value of $O(\lambda^d)$ nodal domains as $\lambda$ tends to infinity with exponentially concentrated probability distribution
And so do you

Note - the poem is not mathematically accurate, but it is close enough for all practical purposes.