Absolutely not. Bribes and gifts above customary tokens of appreciation/recognition (i.e. lunch, coffee mug, plaque) are forbidden. They are considered a violation of PMI's Code of Ethics.
Bribe, even if customary, is a big NO. Sometime a token gift/a customary lunch is okay but only if mentioned specifically that it's a token (small value) gift.
Training for Project Management Professional (PMP)®, PMI Agile Certified Practitioner (PMI-ACP)®, and Certified Associate in Project Management (CAPM)®