lo gracioso es que

the funny thing is that

→ lo
phrase Rare #52,121
the funny thing is that Often introduces an ironic or unexpected fact; despite the literal wording, it does not always mean that something is amusing.
SP: Lo gracioso es que nadie se dio cuenta.
EN: The funny thing is that nobody noticed.

Lo gracioso es que él siempre quiso chicos.

The funny thing is that he always wanted boys.

— Atlantis: El imperio perdido (2001)

Lo gracioso es que a Steve Rendazo yo le gustaba en secreto.

The funny thing is that Steve Rendazo secretly liked me.

— Juno: Crecer, correr y tropezar (2007)

Lo gracioso es que ni siquiera me gustó la primera vez.

The funny thing is, I didn't even like it the first time.

— La Sociedad de los Poetas Muertos (1989)

Lo gracioso es que nunca aprendí nada de la gente de Hot Pink.

The funny thing is, I never learned anything from the people at Hot Pink.