Dirk the Daring sends in this one. The basic joke is just that Hagar messes up. But the details? Did he try to eat it? Did he impale himself on it? Did it get stuck in his beard? (but an internet search on “images violinists with beards” returns a lot of violinists with far longer beards). What’s the situation in that last panel?
And, if you dare, how would you stage that last panel?
(This is under the “not really a pun but word play in general” tag.)
Thanks to Andréa for this Bizarro:
I’m sure I’ve seen this joke used before, but not whether that means this is a repeat or just that the joke has occurred to others. A cursory search does find other examples, and tempting as it is to make a whole post out of three or four of them, let’s leave it at that.