примазаться(к чьему-либо успеху и т.д.: One member said: ‘He has not got involved at all with this and just wants to get in on the act for publicity purposes to make it look as though he has helped resolve it.')
совершенно не разбираться(в чём-либо – If you say that you do not know the first thing about something, you are emphasizing that you know absolutely nothing about it.: You don't know the first thing about farming.)