Lapras
Level 27, IV 89 A/D/S 14/13/13, CP 1979, WG/HP
Double TM?
I don't have any other Lapras above level 20. I have a level 33.5 FB/B Cloyster, and another level 25 FB/Av Cloyster.
Answers
I had so many TMs I used them to change irrelevant pokemon a number of times. Such as Lapras.
In the end, the TMs (even the Fast TMs) are amazing tools. They can take a near-useless mon and turn it into a powerhouse. My first two drogonites were SW/HB. I've kept them since the beginning of the game because of how long it took to get them. And now, nearly a year later, they're both DT/O. ...TMs need t be saved for utility pokemon.
That being said, use it on a pidgey if you want. It's all about fun. But personally I wouldn't waste a TM on a Lapras.
I've done it on a level 23 Lapras, but at the time I was getting 2-3 TMs a day. Past two days I've actually got a charged TM for beating a Lugia and a FTM for beating another--3 rare candy each one. I skimmed SR research on bundles and feel it was consistent with my reward for those. I didn't get gym control damage balls, but perhaps an increased reward at end. Got damage reward balls with a good big group, fainted near end with a clueless crew (6 balls, grrr)