он трещит

is pounding, is falling apart, crackles

t rʲ ɪ ɕː i t → трещать
verb · 3rd-person singular, present tense Rare #28,688
is pounding Used colloquially of a head that hurts badly.
RU: У меня трещит голова.
EN: My head is pounding.
is falling apart Often used in the expression «трещит по швам» (is falling apart at the seams).
RU: Их отношения трещит по швам.
EN: Their relationship is falling apart at the seams.
crackles
RU: В старом радио что-то трещит.
EN: Something is crackling in the old radio.

Мама, лед трещит.

Mom, the ice is cracking.

— Ice (2018)

Трещит.

It’s crackling.

— Ice (2018)

Башка трещит.

My head is splitting.

— Такси-блюз (1990)

Башка трещит!

My head is splitting!

— Андрей Рублёв (1966)