note: for the non-discerning public, this is meant to be a joke…

during tutorial today…

Prof: so… tell me, what is the most common cause of blockage of the aqueduct of Sylvius?

us: hmmmm…. mmmmm…. mmmm…. (all look deep in thought, frowning… of cuz some are frowning cuz they really dunno the answer, like moi, and some just look chronically and eternally perplexed, like Errol. heh.)

Prof: well, what is in your aqueduct?

us: er… cerebrospinal fluid?

Prof: yes, so what can happen to the fluid?

us: *uncomfortable silence*… (i’m sure by then a few smartypants already knew the answer but just wasn’t too sure or din want to make a fool of ourselves to say it)

Er: stone? *giggles*

NB: you all are supposed to laugh now!!! ok, if u dun get it nevermind…. 冷笑话…

anyone who still doesn’t know the answer… it’s meningitis.