How can a guy get rid of breast buds?

Male breast buds: For adults, the only available method is surgery, unless you can identify a medication that is causing it (eg., spironolactone, cimetidine, etc.), prostate drugs like flutamide/finasteride, or certain HIV medications.

Surgery: You are referring to gynecomastia. Breast tissue beneath the nipples enlarges causing nipple protrusion. Surgery involves an incision along the lower 1/2 border of the pimented areola surrounding the nipple and excision of the enlarged glandular tissue with electrocautery.