Shaking the ketchup bottle is a euphemism for male masturbation. The metaphor comes from both the vigorous shaking motion applied to a ketchup bottle, and the "splooging" of ketchup when you've shaken it for long enough. Note: If what comes out is actually ketchup coloured, then you should very likely consult a doctor.
BRB - need to shake the ketchup bottle.

I was vigorously shaking the ketchup bottle last night.

I think I spent too long shaking the ketchup bottle - I'd ran out of ketchup by the time I was finished.

Shaking the ketchup bottle is a great way to pass the time.
by orangepony September 15, 2012
mugGet the Shaking the ketchup bottlemug.

Ketchup Chuck

A "not so practical" joke, that is ideal for resturants, cookouts, or friends refridgerator. Take a ketchup bottle and insert a tampon down into the neck. Replace the lid but leave about one inch of the string hanging out. If you don't have the time to wait for the end result, it's quite easy to imagine the look on the persons face as their curiosity compels them to pull the string out.
That waitress was a bitch and the food sucked. Don't get me wrong, i still tipped her a dollar and i kindly placed under a loaded Ketchup Chuck.
by wild-card March 25, 2010
mugGet the Ketchup Chuckmug.

dick ketchup

The blood that remains on your penis during or after fornicating with a virgin.
Brett: hey bro! I banged out my girl last night.
Dilan: Very nice! How was it?
Brett: It was awesome, but turns out she was a virgin. So I had to clean up some dick ketchup.
Dilan: Bruh.... fuck that.
by Webster's Dicktionary March 31, 2015
mugGet the dick ketchupmug.

Ketchup on your hotdog

A guy having sexual intercourse with a girl who is menstrating.
"Do you like ketchup on your hotdog?"
by Slut69 July 23, 2013
mugGet the Ketchup on your hotdogmug.

Pikachu loves Ketchup

Pikachu (Pokemon) really loves Ketchup and when Scyther (Another Pokemon) breaks Pikachu’s bottle of Ketchup, Pikachu cries and is sad.
Use Pikachu loves Ketchup when talking to people who loves Ketchup and Pikachu
by U r Fat Mama Fat May 13, 2019
mugGet the Pikachu loves Ketchupmug.

used ketchup lid

Blooming hell frank, I hammered her arse hole that hard it looks like a used ketchup lid.
by Ginger Barbarian. December 6, 2017
mugGet the used ketchup lidmug.
The day after a girl has finished her period, then has sex, the next day she bleeds a little more.
I had sex last night with Jon and this morning I was bleeding again I guess he tapped the Ketchup bottle.

My husband was tapping the ketchup bottle to get the last bit out. I was very happy he did!

We were tapping the ketchup bottle and the kids woke up.
by iva pad February 27, 2011
mugGet the tapping the ketchup bottlemug.

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