comical (story, song);  comic;  the comedy business (rakugo, manzai, etc.);  something laughable
 to roll about with laughter;  to be convulsed with laughter;  to laugh one's head off
 loud laughter;  roaring with laughter
 to smile (at);  to grin (at)
 great laughter;  burst of laughter
 suppressed laugh;  smile;  giggle;  chuckle
 embarrassed smile;  embarrassed laugh;  bashful smile
 fukuwarai;  New Year's game in which blindfolded players place cutouts of facial features onto the outline of a face
 to laugh away;  to laugh off
 laughingstock;  butt of ridicule
 insincere laugh;  insincere smile;  ingratiating smile
 forced laugh;  forced smile
 to stifle a laugh;  to hold back a laugh
 to cause laughter;  to extract a smile
 merry drinker;  one who laughs easily
 to roll about with laughter;  to laugh heartily
 a laughingstock;  a standing joke
 Panaeolus papilionaceus (species of poisonous mushroom)
 insincere smile;  ingratiating smile;  polite smile;  forced smile
 insincere smile;  ingratiating smile;  polite smile;  forced smile
 laughing while crying;  smiling through one's tears;  (alternately) laughing and crying;  tears and laughter;  joy and sorrow
 stifled laugh;  chuckling;  snickering
 horse laugh;  guffaw;  wild laughter
 horse laugh;  guffaw;  wild laughter
 laughing while reminiscing
 sense of humour (humor);  funny bone
 sense of humour (humor);  funny bone
 laughing in astonishment (at something silly or stupid);  scoff
 laugh line;  smile line;  nasolabial fold
 laugh line;  smile line;  nasolabial fold
 sardonic laugh;  scornful smile
 laughing by oneself;  erotic pictures;  shunga
 butt of a joke;  punchline
 servile smile;  sycophantic smile;  servile laugh;  sycophantic laugh
 laughing kookaburra (Dacelo novaeguineae)
 chuckle;  snigger;  laughing secretly
 comic picture;  funny illustration;  shunga;  pornographic picture
 beginning to laugh because others are laughing;  being smitten by (infectious) laughter
 something people would laugh at
 laughing gull (Leucophaeus atricilla)
 the pot calling the kettle black;  people who live in glass houses shouldn't throw stones