Tom Brady -- Bizarre Reaction ... to Wes Welker Drugs Allegations

Tom Brady just addressed the Wes Welker suspension -- but gave a very bizarre reaction when asked if he saw his ex-teammate do any drugs during the Kentucky Derby.

At first, the New England Patriots QB brushed off Welker's suspension -- saying it was Welker's problem to deal with:

"As a friend, you always hope the best. But, this is not friend time. It's opponent time. My focus is on the Dolphins."

That's when a reporter asked Tom if he saw Welker taking any drugs during the Kentucky Derby -- where the two hung out together back in May.

Tom's response -- awkward laughter ... followed by, "I got no comment on that, no."

It's an odd answer ... the standard reply when asked if you saw your friend doing drugs is usually a pretty firm "NO" followed by a defense of the friend's character.

Unless that's simply not the case.