Having a major headache after taking a shower, a bath, swimming or being in water for a long time. The headache usually occurs within a few minutes.
Jim: Dude, why does my head hurt so much!
Bob: Werent you in the shower ten minutes ago?
Jim: Yeah, but wh-
Bob: You have a water headache.
Jim: Ohhhhh ouch!
Bob: Werent you in the shower ten minutes ago?
Jim: Yeah, but wh-
Bob: You have a water headache.
Jim: Ohhhhh ouch!
by Igiko Pop September 28, 2011