There are many websites which list the witty and often apocryphal epitaphs found on tombstones. For example, a Wild West headstone in the Boothill Graveyard in Tombstone, Cochise County, Arizona, USA, bears the classic epitaph:
Here lies Lester Moore, four slugs from a .44, no Les, no more.One of many web-pages with a list of these witty couplets is at this link. But for a more historical and complete catalogue, see this book from the 19th Century which archives many epitaphs from ye olde English graveyards (pre 1870's). It is reproduced in full at the Internet Archive Open Library, and is entitled:
Epitaphiana or, The curiosities of churchyard literature, being a miscellaneous collection of epitaphs with an introduction giving an account of various customs prevailing amongst the ancients and moderns in the disposal of their dead.
by William Fairley
Published in 1875, S. Tinsley (London)
Here is an embedded reader courtesy of Internet Archive Open Library which presents the book in its entirety, enjoy: