Thumping is a dull sound produced when something impacts a surface that absorbs soundwaves. This sound effect is sometimes seen in vore to represent the muffled impacts of a struggling prey. It is also an alternative sound effect for a heartbeat. Although this is an impact-related onomatopoeia (unless presented as "Thmp"), it is most likely better to use contact_onomatopoeia instead. Heartbeats probably should not be treated as impact sounds. Sound effect forms: "Thump", "Thmp", "Tump", "Ba-thump", "Ba-dump", "Ba-dum"
See also