The Celtic manager attended a disciplinary tribunal at Hampden Park and was found guilty, on the back of two complaints to the SFA, of using offensive language towards Saints skipper Jim Goodwin during a match at St Mirren Park on March 31. No sanction was issued for the breach but a suspended three-game ban from last season was triggered.
Lennon, who will not appeal and thus will sit in the stand for Sunday's potential Clydesdale Bank Premier League title-winning game at home to Inverness, was far from pleased at his weekly press conference. "I will take my three-game ban, that is no problem to me," he said. "But what is coming is a storm for the SFA. This has opened up a huge can of worms."
The Northern Irishman added: "If you hear a manager swearing, is he going to get brought up? I have seen a lot worse. I have seen managers smash dugouts this season and managers squaring up to each other.
"I'm caught on a microphone making a sarcastic comment to a player and I'm sitting here with a three-game ban. I sat there for four hours and couldn't believe what I was hearing. It was a complete waste of time and effort.
"I can't go into detail because it is confidential but I saw panel members shaking their head in disbelief and at the end of it, they had no sanction. It sums up a lot of things about football in this country; petty, narrow-minded.
"There was a fourth-official stood six feet away from and didn't feel I did anything wrong so I still think it is bizarre that on the strength of two complaints, from a game that was televised all around Britain and which maybe had 500,000 people watching, that the SFA decided to take this on.
"Me and my staff, what are we going to do, complain about every manager using foul language from now on? You only need two complaints, obviously, before you are hauled up before the SFA so there is going to be a big, big queue of people outside Hampden."
Lennon insisted that the tribunal was "put in an impossible position" then claimed he was told that SFA compliance officer Vincent Lunny was prompted to take the case on.
He said: "Yes. He was asked to take it on. I am not suggesting anything, I am just going on what I was told. He was prompted, no doubt in my mind, to take the case on. Not by the two complainants but by somebody else. You don't bring the case up on the strength of two complaints."