she's a keeper.

The dad ain't so sure about that

I bet the dad plays pranks too. And he probably will joke about it for years.

There's no coming back from that in your dad's eyes haha, but got to admit she's a keeper.. Well you can still send a strap on and a small letter to your gf's place but as a Amazon luxury gift package with her best friends name as the sender so the chances are high that she'll open it in front of her family with a bang haha (but make sure to drop a call before she shout at her best friend) ;)

Lube it up and send it back with a thank you card and see what she says

Can't imagine the conversation after that....

"Word to the wise: never let it go?"

Lol
You gotta adore a girl with a sense of humor.
She sounds like a keeper.

what a cock...

Cork?

sounds like she's mailing you a hint

She knows how to surprise you

You've got the best gf lol hahaha. how'd you explain that?
lol I just faved that

i bet your dad didn't believe your explanation...
"NO DAD IM NOT GAY I SWEAR MY GIRLFRIEND SENT ME THIS PACKAGE"
"Sure son, you can expect me to believe that's not the only 'package' you're opening"

There's nothing like having some warm liquid spurted over your back while you're checking out your new dildo and lube.

Did your dad spit out his coffee because he was laughing?

No, he thought OP's neck might be thirsty.

Some girlfriend you got

Are you sure she isn't one of the Jokers (Impractical Jokers) in disguise?

one of the Jokers would have given it to him in person. Or asked him to help bury it in the park.