The “t” in “it” is pronounced with both your lips, not the tongue, so you’re ready for the /m/ sound. Be careful not to open your lips between the sounds. A similar thing happens with the “d” of “blood”. This is also pronounced with both lips, not tongue, to be ready for the /b/ sound. Again, don’t open your lips between the sounds.
The phrase means, “It makes me angry”. I hope nothing makes your blood boil today.