One would say "um" when he or she is blank or trying to figure out what to say.
This is just my defenition of it, but I reccomend you looking it up online :)
um hey! its mufasa
Um...Well..you know...like saying, "Hey, that person is old, they must be boring. Or, "Hey, that person is old they must be mean."
um hey
Yeah? What's up. I guess. Um....
biologically? your mama slept with her daddy.
Hey. Oh um boo haa
Um if you are trying to say oye COMO has estado mi amor, then it means Hey how have you been my love.
hey um i think it is 45789002
Hey
hey!um why is this not giving me an answer?jk. i no y!
um you click it then if it takes you to another screen hey presto!
um my name is saniyah and i wanna know what my name is in spanish