Mr Abubakar, a former vice president popularly known as Atiku, stated this on Thursday while campaigning in Onitsha, the commercial city of Anambra State.
Mr Buhari since he started his presidential campaign has repeatedly been caught goofing.
In 2017, the outlawed Indigenous People Of Biafra (IPOB) began an alleged propaganda against Mr Buhari after he returned from a medical vacation spanning over three months outside the country.
Since the start of his campaign, Buhari has been caught severally goofing at campaign ground.
Daniel Nwafor, the APC chairman who announced the lawmaker's expulsion accused him of anti-party activities.
Mr Onnoghen is accused for allegedly omitting to declare his assets and illegally operating five domiciliary accounts in various foreign currencies.
Mr Umahi who seeks a second term in office on the platform of the PDP said the damage done to presidential billboards in his domain were carried out by members of Friends of Atiku (FOA) campaign group.
In a statement on Wednesday, Odumakin stated that he was sent to raise the alarm by leaders of the Southern and Middle Belt forum following intelligence report at its disposal.
Akpabio has so far dismissed the allegations.
Ekweremadu is reported to have been sidelined on recent developments in the PDP, this the opposition party denied.