Verbally Unsavvy

I think I'm really quite bad at expressing myself verbally, or would I say "slow"? This is especially so when I receive compliments or even when people say "thank you" to me. Somehow I always seem to get caught off-guard and get tongue-tied. Hmm...maybe I tend to think too much? Then after that, I would regret and think of what I should have said, which would of course be too late.

So friends, please do not be offended if somehow I don't respond well. I'm not being "dao" or rude, I'm just a bit slow/unsavvy at expressing myself verbally.