A GrabWalk courier reportedly asked for a $4 tip after delivering a bubble tea in an hour, leaving the customer feeling "really frightened" and pressured. The incident, which took place in Singapore, highlights concerns about tipping practices and customer interactions in the gig economy. According to the report, the rider approached the customer directly to request the tip, which caused discomfort. The customer described the experience as unsettling, suggesting a lack of clear guidelines on how and when to tip. The incident has sparked discussions on the ethics of tipping in delivery services. The report comes from a local news outlet, shedding light on the growing scrutiny of platform-based delivery work.