What are white bumps on the bottom of my tongue?

I have noticed for the past couple of says that theres a sortof 'big' bump on the bottom of my tongue.. and it it white and sometimes it goes away but maybe the next day it comes back and it looks liek an air bubble on the bottom of my tongue.. it isnt painful unless I bite it or press hard on it.. what is it???

It could be a Normal Whitehead,
Similar to a zit on your tongue.
However,If you get these often,id see a doctor.
You could have a sickness
=/

good luck
=]

try surfing the web or it mite be a desiese so try 2 find out what it is