[It's not so much a scream for help as it is a particularly insistent whisper, but as Sans passes by a certain tree, he'll suddenly hear:]
Sans. Sans. Saaaaaans.
[No. Rest assured, the trees aren't talking. Look just a yard or two up, though, and lo and behold — there's Frisk. Dangling upside down from one of the trees, their foot caught up in a particularly strong vine. Uh. They're just... going to wave hello once they manage to get him to look up.]
phase 2!
Sans. Sans. Saaaaaans.
[No. Rest assured, the trees aren't talking. Look just a yard or two up, though, and lo and behold — there's Frisk. Dangling upside down from one of the trees, their foot caught up in a particularly strong vine. Uh. They're just... going to wave hello once they manage to get him to look up.]
... Need help. Please?