Considering the characters in Pokémon have birthdays annually, if it was Shinji's birthday, what would Satoshi give him? If it was Satoshi's birthday, what would Shinji give him?
Let us say that their birthdays are each one day apart, with Shinji's first.
Satoshi would want to get something for him, but nothing too romantic or cliché as that is not Shinji's style. Satoshi goes to the mall and other stores and looks long and hard for just that right item. New clothes? Nope since Shinji picks his own out. Gift certificate? No, Shinji may not like the store. Money? That would be the easy way out. Shinji like the practical things- things that are useful and powerful. So Satoshi gets Shinji some status-enhancing items for his Pokes.
Next day, Satoshi's birthday. Shinji knows that Satoshi would get a lot of gifts from his friends, family and wanna-be lovers. So Shinji gives Satoshi the one thing he can give him,
and that involves lube, and lots of itinvolving their bed, some liquor and staying up all night.
And on the episode review part...Shinji's line in the dub pretty much sums up the SatoShinji relationship in the anime so far:
"If you insist on making a fool out of yourself, then be my guest." I loved Shinji's delivery and composure during that scene.