i have a lil problem with silly/novelty tees (my dresser is literally breaking) so i feel uniquely qualified to answer this!! here are some of my fave places to source:
- ebay!!! search for old crew tshirts from your favorite movies especially if you’re into that sort of thing (or old band merch) - there’s usually a ton of heaters on there for reasonable prices
- henry johnson (linked) does limited quantity drops of fun tees- can be a lil pricey but the quality is amazing
- jerks store - have amazing shit but SUPER expensive (esp if ur outside the UK). occasionally will have good deals on stuff so keep an eye out but i mostly window shop here tbh
- cryingintheclub - great quality, fun, reasonable prices, an overall good time!!
- o mighty - great if u want cunty tanks and baby tees
- fashion brand company - also great for cunty tank tops
- super yaki / girls on tees / humanboyworldwide - the best sites if youre a film lover!!! if you’re not - maybe skip these
- copycatvideopress - also great for movie and music specific tees & hats
- bluemondaypress - just a fun shop overall with tees, zines and other novelties
- brain dead studios - a little pricey but they have great collabs & the quality is unmatched imo (i got a korn shirt here once and i love her)
and that’s all i can think of hope this helps lol