YOU SAID:

peepee go up, iq go down

INTO JAPANESE

「ピーピーが上がる、iq が下がる

BACK INTO ENGLISH

"Pee pee goes, lower iq

INTO JAPANESE

「しっこおしっこ行く、iq を下げる

BACK INTO ENGLISH

"Pee pee go, the lower the iq

INTO JAPANESE

「しっこおしっこに行く iq が低い