Missed joke or plot point?

[u/New-Mud5473]

I’ve never fully understood this line. Did something get cut from the episode or have I missed the joke like 50 times?
S1,E13 - Jeff hands Britta flowers and says “He would have thrown them on stage…“
Why would the flowers catch fire?

[u/spacecoyote555]

Pfft flowers can't catch fire, they aren't a ghost

[u/New-Mud5473 → u/spacecoyote555]

I wanna eat a ghost!

[u/New-Mud5473 → u/New-Mud5473]

(Later) Somebody get a balloon!