I got it from a relicanth by sootopolis in the weeds
Pokemon cannot learn Yawn in Pokemon Silver.
Yawn is not a TM.
you cant only certain types of Pokemon can get it same for hypnosis ans sleep powder for more info on which can (usally slow or lazy) go to wikipeida and type how do you get the TM yawn
There is no TM yawn. Only certain Pokemon can learn yawn/hypnosis/sleep powder/etc.
Slakoth
Yawn is not taught by a move tutor it can be learned by some Pokemon such as Snorlax also Slakoth and Slaking.
yawn
Yawn
At any gme stop.
uxie,hippotas,hippodon and snorlax(yes he is in platinum).
Untill the Pokemon wakes up.
Slakoth - Petalburgwoods Gulpin - Route 110