Yes, it is extremely rude and offensive to call an obese person a "tub of lard" or use any derogatory terms to refer to their weight or appearance. This kind of language is hurtful, disrespectful, and can be emotionally damaging to the individual being targeted. It promotes body shaming and can contribute to low self-esteem and body image issues.
Addressing someone's weight or appearance in a derogatory manner is never acceptable, regardless of the circumstances. It is essential to treat all individuals with kindness, empathy, and respect, regardless of their size or appearance.
If you have concerns about someone's health or well-being, it is more appropriate to express care and support in a compassionate and understanding way. Offering support for a healthy lifestyle, without judgment or negativity, can be far more beneficial and supportive.
Remember, body weight is a sensitive topic for many people, and using hurtful language can have serious emotional consequences. Practice empathy, treat others with kindness, and focus on building positive and supportive relationships with those around you.