Looking on the internet deeply has found these results:

Why'd he do that is the most popular phrase on the web.

Why'd he does that 10 results on the web	Why'd he do that 1861 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	0622. 09250 Unique Identifier: 2007 Feb 27, 2014 ... This Thursday @730pm Why'd He Do That Show will have Alex Magallanes Mokinock Mendoza and Alwa Gordon. Call in live 831 204 Apr 30, 2015 ... Shit Shit Shit Why'd he do that??? Why????!!?!? Ted could hear his heart beating in his skull. He hadn't been asleep at all. Hell he couldn't�... 019; Title: Now why'd he do that? The nature and correlates of mothers' attributions about negative teen behavior. Publication�... Now Why'd He Do That? The Nature and Correlates of Mothers' Attributions About Negative Teen Behavior. Laurie Heatherington � email the author�...

Why'd he does that

10 results on the web

Why'd he do that

1861 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

0622.
09250
Unique Identifier: 2007
Feb 27, 2014 ... This Thursday @730pm Why'd He Do That Show will have Alex Magallanes Mokinock Mendoza and Alwa Gordon. Call in live 831 204
Apr 30, 2015 ... Shit Shit Shit Why'd he do that??? Why????!!?!? Ted could hear his heart beating in his skull. He hadn't been asleep at all. Hell he couldn't�...
019; Title: Now why'd he do that? The nature and correlates of mothers' attributions about negative teen behavior. Publication�...
Now Why'd He Do That? The Nature and Correlates of Mothers' Attributions About Negative Teen Behavior. Laurie Heatherington � email the author�...