Me(DM): so you’ve been sucked into the giant gelatinous cube and you’re stuck.
Bard: Can I still move?
DM: I mean I guess so, but you can’t walk out.
Bard: (thinking) Can I ask it nicely to let me go?
DM: I mean it can’t hear you? You’re inside it and sound doesn’t travel through the gel?
Bard: No I mean like on a nice note?
DM: Uh… I mean you can try?
Bard: okay I write “Please let me out”
DM: Roll persuasion
Bard: Nat 20
DM: sigh… The cube is moved by your words and releases you.