My Dad: I like your plane, Calvin.
Calvin: *sigh* It's a P-38, Granddaddy.
Dad: Oh, sorry. I like your P-38.
Calvin: Granddaddy, what advantages did the P-38 have over Zeroes?
Dad: What?
Calvin: Tell me some of the advantages that the P-38 had over Zeroes?
Dad: Um, well it has two engines, so it probably had a better climb rate. And...uh...that means it also had a, uh, higher, um, a higher...the ceiling...uh...
Calvin: Yes, Granddaddy, the P-38 had a higher service ceiling.
Dad: "Service ceiling!" That was the term I was looking for!
Calvin: *gives GDad a look*
Calvin: *sigh* It's a P-38, Granddaddy.
Dad: Oh, sorry. I like your P-38.
Calvin: Granddaddy, what advantages did the P-38 have over Zeroes?
Dad: What?
Calvin: Tell me some of the advantages that the P-38 had over Zeroes?
Dad: Um, well it has two engines, so it probably had a better climb rate. And...uh...that means it also had a, uh, higher, um, a higher...the ceiling...uh...
Calvin: Yes, Granddaddy, the P-38 had a higher service ceiling.
Dad: "Service ceiling!" That was the term I was looking for!
Calvin: *gives GDad a look*