If you can't make a good getaway, at least make a good set of last words. Annoying your arch-enemy is a good bet, since they won't have a chance to beat you up over it. And if they do, that means you have somehow evaded certain death - either way you win!
Transcript
Han: Hey, Fetta! Guess where Obi-Wan is? He's—
[SFX]: Ssssssssssssss!!!
Boba Fett: Nooooooo!!!
{Han is pulled out of the freeze chamber, in a solid block}
{Ugnaughts tip the block on floor}
[SFX]: Slam!!!
Han: {small} Raaarrr!