On 27/11/2018 19:49, R D S wrote:
Someone posted similar the other day, i've got an earworm, it's doing my
head in.

Recentish song, I can't remember anything much other than that at the
end of some lines someone says "yeah" in a casual sort of way. It's not
directly part of the lyric.

Pop, not rap.

Does this post qualify for the one with the least information provided?

Try humming the melody into Shazam.