YOU SAID:

the lizard will throw up on his lap in the future

INTO JAPANESE

トカゲは将来膝の上で吐くでしょう

BACK INTO ENGLISH

Lizards will vomit on their laps in the future

INTO JAPANESE

トカゲは将来、膝の上で嘔吐するようになる

BACK INTO ENGLISH

Lizards will vomit on their laps in the future