In the completion text the following can be read: "You wouldn't get this from any other guy!", which is an obvious reference to Rick Astley's "Never gonna give you up".
This is one of two, perhaps more, references in Kelp Forest. The other reference being in the quest text of A Girl's Best Friend.
Blizzard developers must have a thing for rickrolls...
Quest
Nerve Tonic
A World of Warcraft quest in Kelp'thar Forest. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
Was I the only one to sing out the last line, upon reading the completion text?
Sunken Cargo can be found floating around the skunken ships south east of honor's tomb
Quest facts
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(25358))
Description
How am I feelin', you ask? Well, after bein' yanked from the deck of our ship by a giant sea monster and then left to drown in the sea... not so good! My nerves are gettin' the best of me, to be honest. If you could round up some of the supplies that are sure to be floatin' around the nearby wrecks, I could likely whip up somethin' that'll take the edge off...
Community notes from Wowhead · 14 comments
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Reward details
Items you receive
“A musty, somewhat hollow taste with a hint of fish.”
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.