This sound accompanied the event of Jillian's megalogwiff slamming down onto Ansom and the spidew he was riding, in LIAB 29:9. In a later panel, it was clear that Ansom was absorbed into the body of the megalogwiff, as his head was visible jutting from its body. There is some speculation that the spidew was crushed and croaked, as it is not observed later.
The sound was written in pink letters with many pink hearts floating in the panel, suggesting the pun that Jillian had a "crush" on Ansom. (i.e. that she fell for him ) This pun is substantiated by her previous and continuing affection for him.