Chances are, you didn't even have real wasabi. Most of what you get outside of Japan is a "less potent" version. Real wasabi is death paste.
oh jeez
i went to a really expensive restaurant earlier this year and ordered a sushi flight and it came with wasabi
my british grandmother suggested i try the raw salmon with a bit of wasabi on it so i did and holy stuff i gagged because it burned so much
and then later i found some way up above my teeth and i gagged again