Lazy Liar.

Me: Indolent means lazy. Can you think of a person you know who is indolent?

Student: My brother! He lied and said he couldn't take me to school, but it was really because he was lazy.

Me: Ok. Your brother was indolent about taking you to school.

[Later]

Me: What does indolent mean?

Student: Indolent means . . . don't tell me!!

Me: . . .

Student: Indolent . . .

Me: Who did we say was indolent?

Student: My brother! So it means a liar!