abo ang laman ng ulo

Literally, “ash is the content of the head”, or more loosely translated as “head full of ash”.

• (Standard Tagalog) IPA^(key): /ʔaˌbo ʔaŋ laˌman naŋ ˈʔulo/ [ʔɐˌbo ʔɐn̪ lɐˌman̪ n̪ɐŋ ˈʔuː.lo]
• Rhymes: -ulo
• Syllabification: a‧bo ang la‧man ng u‧lo

abó ang lamán ng ulo (Baybayin spelling ᜀᜊᜓ ᜀᜅ᜔ ᜎᜋᜈ᜔ ᜈᜅ᜔ ᜂᜎᜓ)

1. (idiomatic) weak-minded; dull; having a slow brain