Does drinking aquarium water cause adverse effects ?

Well folks ... the most bizarre thing has happened ... our next door
neighbor came over one night with her little obnoxious 10 year old son
of which I've nicknamed "fatkid".

On a regular basis, fatkid keeps making fun of my fish in addition to
hitting the glass and stressing out the entire community !! My wife
tells me to watch my tone with him because he is accompanied by his
mother and she has sensitivity issues.

One day I couldn't take it anymore ... fatkid asked for a refreshment
so I scooped a glass of water out of the aquarium and fatkid gobbled
the entire glass like there was no tomorrow.

The satisfaction level was quite good I must say however I got to
thinking that night ... will fatkid suffer any adverse effects ??

Any feedback would be appreciated.

Jim.