The T-n-T's, passed down from father heffalump to son heffalump. And the first T is trappin'.
9 seconds sound clip from The New Adventures of Winnie the Pooh - Honey for a Bunny / Trap as Trap Can (S1E13).
You can hear this line at 00:11:59.640 in the Blu-ray version of the TV Series.
Quote context
[...]
- Duck!
- Tigger!
- I'm sorry, Papa. I'm sorry. I know you're allergic to me goofin' up.
- It's perfectly all right, oh, sweet son of mine. We'll try it one more time.
- Now, do you remember your three Ts?
- Sure, Papa. Trackin', trappin', and...
- Trashin' them furry woodland creatures.
- The T-n-T's, passed down from father heffalump to son heffalump. And the first T is trappin'.
- Now, dramatically spring the trap.
- Oh, come on, son. Put a little more heffalump oomp into it.
- Papa, I didn't mean to do it. I'm sorry.
[...]