That's what you'd call ironic.
4 seconds sound clip from the Pirates of the Caribbean 1: The Curse of the Black Pearl movie soundboard.
You can hear this line at 01:42:49 in the Blu-ray version of the movie.
Quote context
[...]
- So, what the captain did... he strapped a cannon to Bootstrap's bootstraps.
- Last we saw of ol' Bill Turner, he was sinking to the crushin' black oblivion of Davy Jones' locker!
- 'Course it was only after that we learned we needed his blood to lift the curse.
- That's what you'd call ironic.
- I don't care for the situation.
- Any attempt to storm the caves could turn into an ambush.
- Not if you're the one doing the ambushing.
- I go in and convince Barbossa to send his men out in their little boats.
[...]