joke: black jeep

[Seun Omokunle]

A University lecturer was set 4 lectures in one of
d lecture rooms and Alas, at d door, dis girl noticed the lecturer 4got 2 zip up his trouser he wore without an under wear.
Girl: sir, u 4get 2 lock ur garage
  Lecturer:(after a intercoursey smile at her) did u see my black jeep parked inside?
Girl: No sir, i only saw a tricycle (keke Napep) with two flat tires. (Meaning he has a small
dick).

[walax]

I dnt really understand the joke , can u pls explain better

[Tina lawrence]

What an insult! This is not looking nice at all o.A student insulting a lecturer? That is carry over o

[Amynwan]

i just pray the lecturer dont understand what she mean, because if he should understand, then the girl will have carry over.

[Nifemi Donald]

*clears throat* Did I just read this joke?