> Geplumpst

Basically means something fell or as Google Translate says "flopped" -- however, GP seems to be excited over the apparent onomatopoeia in the word because it evokes the sound of something falling in water.

> "Mir ist grad mein handy in den Landwahrkanal geplumpst"

This essentially says "My cellphone fell in the canal!" but with the delicious "geplumpst" word sound.

> "Jetzt könnte ich ein Bier gebrauchen"

This exclaims "I could use a beer now".

"geplumst" is the funny part here, it's very colloquial, kinda silly-sounding, playful – similar to "plumped". Just makes the whole sentence more delightful.

"My phone just plopped into the Landwehr Canal."

"Hahaha and now what"

"Great question"

"Now I could use a beer."

I would say the best translation to English is 'plopped' - it's a sort of whimsical or even comical way of saying it fell in.

From the context and the word "Bier", "I'd like to grab a beer" perhaps

> Mir ist grad mein handy in den Landwahrkanal geplumpst

My cell phone just fell into the Landwehr Canal

> Jetzt könnte ich ein Bier gebrauchen

I could use a beer now

(Google's translations, not mine)